diff --git a/lib/lrama/grammar.rb b/lib/lrama/grammar.rb
index 326d2264..42337682 100644
--- a/lib/lrama/grammar.rb
+++ b/lib/lrama/grammar.rb
@@ -369,17 +369,7 @@ def normalize_rules
       setup_rules
 
       @rule_builders.each do |builder|
-        builder.midrule_action_rules.each do |rule|
-          add_nterm(id: rule._lhs)
-          @rules << rule
-        end
-
         builder.rules.each do |rule|
-          add_nterm(id: rule._lhs)
-          @rules << rule
-        end
-
-        builder.parameterizing_rules.each do |rule|
           add_nterm(id: rule._lhs, tag: rule.lhs_tag)
           @rules << rule
         end
diff --git a/lib/lrama/grammar/rule_builder.rb b/lib/lrama/grammar/rule_builder.rb
index 27ff85eb..4730cc39 100644
--- a/lib/lrama/grammar/rule_builder.rb
+++ b/lib/lrama/grammar/rule_builder.rb
@@ -57,16 +57,8 @@ def setup_rules(parameterizing_resolver)
         build_rules
       end
 
-      def parameterizing_rules
-        @parameterizing_rules
-      end
-
-      def midrule_action_rules
-        @midrule_action_rules
-      end
-
       def rules
-        @rules
+        @parameterizing_rules + @midrule_action_rules + @rules
       end
 
       private
diff --git a/sig/lrama/grammar/rule_builder.rbs b/sig/lrama/grammar/rule_builder.rbs
index 7522c77f..924ca509 100644
--- a/sig/lrama/grammar/rule_builder.rbs
+++ b/sig/lrama/grammar/rule_builder.rbs
@@ -25,8 +25,6 @@ module Lrama
       def precedence_sym=: (Lexer::Token user_code) -> void
       def complete_input: () -> void
       def setup_rules: (Grammar::ParameterizingRuleResolver parameterizing_resolver) -> void
-      def parameterizing_rules: () -> Array[Rule]
-      def midrule_action_rules: () -> Array[Rule]
       def rules: () -> Array[Rule]
 
       private
diff --git a/spec/lrama/grammar/rule_builder_spec.rb b/spec/lrama/grammar/rule_builder_spec.rb
index ff2bedb2..fd6a18cd 100644
--- a/spec/lrama/grammar/rule_builder_spec.rb
+++ b/spec/lrama/grammar/rule_builder_spec.rb
@@ -347,16 +347,18 @@ class : keyword_class tSTRING tSTRING keyword_end { $class = $tSTRING; }
       rule_builder.complete_input
       rule_builder.setup_rules(Lrama::Grammar::ParameterizingRuleResolver.new)
 
-      rule = rule_builder.rules.first
-      rules = rule_builder.midrule_action_rules
-
-      expect(rules.count).to eq 2
-      expect(rules[0]._lhs.s_value).to eq '@1'
-      expect(rules[0].token_code.s_value).to eq '$1'
-      expect(rules[0].original_rule).to eq rule
-      expect(rules[1]._lhs.s_value).to eq '$@2'
-      expect(rules[1].token_code.s_value).to eq '$2 + $3'
-      expect(rules[1].original_rule).to eq rule
+      rules = rule_builder.rules
+      midrule_1 = rules.find {|rule| rule._lhs.s_value == "@1"}
+      midrule_2 = rules.find {|rule| rule._lhs.s_value == "$@2"}
+      rule = rules.find {|rule| rule._lhs.s_value == "class"}
+
+      expect(rules.count).to eq 3
+      expect(midrule_1._lhs.s_value).to eq '@1'
+      expect(midrule_1.token_code.s_value).to eq '$1'
+      expect(midrule_1.original_rule).to eq rule
+      expect(midrule_2._lhs.s_value).to eq '$@2'
+      expect(midrule_2.token_code.s_value).to eq '$2 + $3'
+      expect(midrule_2.original_rule).to eq rule
     end
   end
 
diff --git a/spec/lrama/parser_spec.rb b/spec/lrama/parser_spec.rb
index fba3aa0c..327b6599 100644
--- a/spec/lrama/parser_spec.rb
+++ b/spec/lrama/parser_spec.rb
@@ -567,10 +567,10 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number_alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number_alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
         ])
 
         expect(grammar.rules).to eq([
@@ -656,10 +656,10 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number_alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number_alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
         ])
 
         expect(grammar.rules).to eq([
@@ -744,8 +744,8 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 1, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "option_bar"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_bar"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 2, nullable: false),
         ])
 
         expect(grammar.rules).to eq([
@@ -804,10 +804,10 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 7, tag: T::Tag.new(s_value: "<i>"), term: false, token_id: 2, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number_alias"), alias_name: nil, number: 9, tag: T::Tag.new(s_value: "<i>"), term: false, token_id: 4, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 6, tag: T::Tag.new(s_value: "<i>"), term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number_alias"), alias_name: nil, number: 8, tag: T::Tag.new(s_value: "<i>"), term: false, token_id: 3, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
         ])
 
         expect(grammar.rules).to eq([
@@ -896,10 +896,10 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "nonempty_list_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "nonempty_list_number_alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "nonempty_list_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "nonempty_list_number_alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: false),
         ])
 
         expect(grammar.rules).to eq([
@@ -990,10 +990,10 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "list_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "list_number_alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "list_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "list_number_alias"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "alias"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
         ])
 
         expect(grammar.rules).to eq([
@@ -1079,9 +1079,9 @@
         grammar = Lrama::Parser.new(y, path).parse
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
-          Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number:  5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number:  6, tag: nil, term: false, token_id: 1, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "separated_nonempty_list_number"), alias_name: nil, number:  7, tag: nil, term: false, token_id: 2, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "separated_nonempty_list_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: false),
         ])
 
         expect(grammar.rules).to eq([
@@ -1141,10 +1141,10 @@
         grammar = Lrama::Parser.new(y, path).parse
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
-          Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number:  5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number:  6, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "separated_list_number"), alias_name: nil, number:  7, tag: nil, term: false, token_id: 2, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "separated_nonempty_list_number"), alias_name: nil, number:  8, tag: nil, term: false, token_id: 3, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "separated_list_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "separated_nonempty_list_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: false),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
         ])
 
         expect(grammar.rules).to eq([
@@ -1225,8 +1225,8 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "defined_option_number"), alias_name: nil, number: 8, tag: T::Tag.new(s_value: "<i>"), term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "defined_option_number"), alias_name: nil, number: 7, tag: T::Tag.new(s_value: "<i>"), term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 2, nullable: true),
           Sym.new(id: T::Ident.new(s_value: "multi_args_number_string"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 3, nullable: false),
           Sym.new(id: T::Ident.new(s_value: "multi_args_number_number"), alias_name: nil, number: 10, tag: nil, term: false, token_id: 4, nullable: false),
           Sym.new(id: T::Ident.new(s_value: "pair_number_string"), alias_name: nil, number: 11, tag: nil, term: false, token_id: 5, nullable: false),
@@ -1386,10 +1386,10 @@
 
         expect(grammar.nterms.sort_by(&:number)).to match_symbols([
           Sym.new(id: T::Ident.new(s_value: "$accept"), alias_name: nil, number: 5, tag: nil, term: false, token_id: 0, nullable: false),
-          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "nested_option_number"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
-          Sym.new(id: T::Ident.new(s_value: "nested_nested_option_number"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "option_number"), alias_name: nil, number: 6, tag: nil, term: false, token_id: 1, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "nested_option_number"), alias_name: nil, number: 7, tag: nil, term: false, token_id: 2, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "nested_nested_option_number"), alias_name: nil, number: 8, tag: nil, term: false, token_id: 3, nullable: true),
+          Sym.new(id: T::Ident.new(s_value: "program"), alias_name: nil, number: 9, tag: nil, term: false, token_id: 4, nullable: true),
           Sym.new(id: T::Ident.new(s_value: "multi_option_number_string"), alias_name: nil, number: 10, tag: nil, term: false, token_id: 5, nullable: true),
           Sym.new(id: T::Ident.new(s_value: "nested_multi_option_number"), alias_name: nil, number: 11, tag: nil, term: false, token_id: 6, nullable: true),
           Sym.new(id: T::Ident.new(s_value: "nested_multi_option_string"), alias_name: nil, number: 12, tag: nil, term: false, token_id: 7, nullable: true)