diff --git a/test/Rust2.fst b/test/Rust2.fst
index 44c90d5a..df2490d9 100644
--- a/test/Rust2.fst
+++ b/test/Rust2.fst
@@ -6,7 +6,7 @@ module B = LowStar.Buffer
 open FStar.HyperStack.ST
 
 #set-options "--fuel 0 --ifuel 0"
-
+(*
 let basic1 (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
   push_frame ();
   let x = B.alloca 0ul 6ul in
@@ -17,6 +17,7 @@ let basic1 (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
   B.upd x 0ul 1ul;
   pop_frame ()
 
+(*
 let basic2 (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
   push_frame ();
   let x = B.alloca 0ul 6ul in
@@ -30,8 +31,33 @@ let basic2 (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
   B.upd x0 0ul 2ul;
   B.upd x1 0ul 2ul;
   pop_frame ()
+*)
+
+let basic_copy1 (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
+  push_frame ();
+  let x = B.alloca 0ul 6ul in
+  let y = B.alloca 1ul 6ul in
+  B.blit y 0ul x 0ul 6ul;
+  pop_frame()
+*)
+let basic_copy2 (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
+  push_frame ();
+  let x = B.alloca 0ul 6ul in
+  let y = B.alloca 1ul 6ul in
+  let x0 = B.sub x 0ul 2ul in
+  let x1 = B.sub x0 0ul 1ul in
+  // let x2 = B.sub x 1ul 4ul in
+  let y0 = B.sub y 0ul 2ul in
 
+  let y1 = B.sub y 0ul 1ul in
+  // B.upd x0 0ul 5ul;
+  // B.upd y0 0ul 5ul;
+  B.upd x1 0ul 5ul;
+  B.upd y1 0ul 5ul;
+  B.blit y0 0ul x0 0ul 2ul;
+  pop_frame()
 
+(*
 let doesnt_work (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
   push_frame ();
   let x = B.alloca 0ul 6ul in
@@ -43,8 +69,11 @@ let doesnt_work (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
   B.upd x0 0ul 2ul;
   B.upd x1 0ul 2ul;
   pop_frame ()
+*)
 
 let main (): ST.Stack unit (fun _ -> True) (fun _ _ _ -> True) =
-  basic1 ();
-  basic2 ();
-  doesnt_work ()
+//   basic1 ();
+// //  basic2 ();
+//   basic_copy1();
+  basic_copy2()
+//  doesnt_work ()