diff --git a/uncompyle6/parser.py b/uncompyle6/parser.py
index b5a6d7dc..6903f918 100644
--- a/uncompyle6/parser.py
+++ b/uncompyle6/parser.py
@@ -419,7 +419,6 @@ class PythonParser(GenericASTBuilder):
         gen_comp_body ::= expr YIELD_VALUE POP_TOP
 
         comp_if  ::= expr jmp_false comp_iter
-        comp_for ::= expr _for designator comp_iter JUMP_BACK
         """
 
     def p_expr(self, args):
@@ -478,9 +477,6 @@ class PythonParser(GenericASTBuilder):
         expr ::= conditional
         conditional ::= expr jmp_false expr JUMP_FORWARD expr COME_FROM
 
-        expr            ::= conditionalTrue
-        conditionalTrue ::= expr JUMP_FORWARD expr COME_FROM
-
         ret_expr ::= expr
         ret_expr ::= ret_and
         ret_expr ::= ret_or
diff --git a/uncompyle6/parsers/parse2.py b/uncompyle6/parsers/parse2.py
index 1e83f84a..d358b4e9 100644
--- a/uncompyle6/parsers/parse2.py
+++ b/uncompyle6/parsers/parse2.py
@@ -90,7 +90,6 @@ class Python2Parser(PythonParser):
         stmt ::= exec_stmt
 
         del_stmt ::= expr DELETE_SLICE+0
-        del_stmt ::= expr expr DELETE_SLICE+1
         del_stmt ::= expr expr DELETE_SLICE+2
         del_stmt ::= expr expr expr DELETE_SLICE+3
         del_stmt ::= delete_subscr
diff --git a/uncompyle6/parsers/parse27.py b/uncompyle6/parsers/parse27.py
index caaf24fc..e65a3e62 100644
--- a/uncompyle6/parsers/parse27.py
+++ b/uncompyle6/parsers/parse27.py
@@ -33,6 +33,8 @@ class Python27Parser(Python2Parser):
 
         comp_body ::= dict_comp_body
         comp_body ::= set_comp_body
+        comp_for ::= expr _for designator comp_iter JUMP_BACK
+
         dict_comp_body ::= expr expr MAP_ADD
         set_comp_body ::= expr SET_ADD
 
@@ -84,6 +86,9 @@ class Python27Parser(Python2Parser):
         compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP JUMP_IF_FALSE_OR_POP
                              compare_chained2 COME_FROM
         compare_chained2 ::= expr COMPARE_OP RETURN_VALUE
+
+        expr            ::= conditionalTrue
+        conditionalTrue ::= expr JUMP_FORWARD expr COME_FROM
         """
 
     def p_stmt27(self, args):
@@ -94,6 +99,7 @@ class Python27Parser(Python2Parser):
         # assert condition, expr
         assert2 ::= assert_expr jmp_true LOAD_ASSERT expr CALL_FUNCTION_1 RAISE_VARARGS_1
 
+        del_stmt ::= expr expr DELETE_SLICE+1
 
         withstmt ::= expr SETUP_WITH POP_TOP suite_stmts_opt
                 POP_BLOCK LOAD_CONST COME_FROM_WITH
diff --git a/uncompyle6/parsers/parse3.py b/uncompyle6/parsers/parse3.py
index c3888aad..7280ed3e 100644
--- a/uncompyle6/parsers/parse3.py
+++ b/uncompyle6/parsers/parse3.py
@@ -42,6 +42,7 @@ class Python3Parser(PythonParser):
         # as a CONTINUE. The two are kind of the same in a comprehension.
 
         comp_for ::= expr _for designator comp_iter CONTINUE
+        comp_for ::= expr _for designator comp_iter JUMP_BACK
 
         list_for ::= expr FOR_ITER designator list_iter jb_or_c
 
@@ -279,6 +280,9 @@ class Python3Parser(PythonParser):
         for_block ::= l_stmts_opt opt_come_from_loop JUMP_BACK
         for_block ::= l_stmts
         iflaststmtl ::= testexpr c_stmts_opt
+
+        expr            ::= conditionalTrue
+        conditionalTrue ::= expr JUMP_FORWARD expr COME_FROM
         """
 
     def p_def_annotations3(self, args):