diff --git a/src/vstc/virtual_machine/operations.rs b/src/vstc/virtual_machine/operations.rs
index 95f7ca8..cbc6ea1 100644
--- a/src/vstc/virtual_machine/operations.rs
+++ b/src/vstc/virtual_machine/operations.rs
@@ -27,22 +27,18 @@ pub fn op_div(left: Val, right: Val) -> Val {
   return Val::Number(left.to_number() / right.to_number());
 }
 
-pub fn op_exp(left: Val, right: Val) -> Val {
-  return Val::Number(left.to_number().powf(right.to_number()));
-}
-
 pub fn op_mod(left: Val, right: Val) -> Val {
   return Val::Number(left.to_number() % right.to_number());
 }
 
-pub fn op_less(left: Val, right: Val) -> Val {
-  if left.typeof_() != VsType::Number || right.typeof_() != VsType::Number {
-    std::panic!("Not implemented");
-  }
-
-  return Val::Bool(left.to_number() < right.to_number());
+pub fn op_exp(left: Val, right: Val) -> Val {
+  return Val::Number(left.to_number().powf(right.to_number()));
 }
 
+// OpEq = 0x0a,
+// OpNe = 0x0b,
+// OpTripleEq = 0x0c,
+
 pub fn op_triple_ne(left: Val, right: Val) -> Val {
   if left.typeof_() != VsType::Number || right.typeof_() != VsType::Number {
     std::panic!("Not implemented");
@@ -66,3 +62,30 @@ pub fn op_or(left: Val, right: Val) -> Val {
     right
   };
 }
+
+// OpNot = 0x10,
+
+pub fn op_less(left: Val, right: Val) -> Val {
+  if left.typeof_() != VsType::Number || right.typeof_() != VsType::Number {
+    std::panic!("Not implemented");
+  }
+
+  return Val::Bool(left.to_number() < right.to_number());
+}
+
+// OpLessEq = 0x12,
+// OpGreater = 0x13,
+// OpGreaterEq = 0x14,
+// OpNullishCoalesce = 0x15,
+// OpOptionalChain = 0x16,
+// OpBitAnd = 0x17,
+// OpBitOr = 0x18,
+// OpBitNot = 0x19,
+// OpBitXor = 0x1a,
+// OpLeftShift = 0x1b,
+// OpRightShift = 0x1c,
+// OpRightShiftUnsigned = 0x1d,
+// TypeOf = 0x1e,
+// InstanceOf = 0x1f,
+// In = 0x20,
+// Sub = 0x24,