diff --git a/old_parser/fun_with_bison/ielr_grammar.y b/old_parser/fun_with_bison/ielr_grammar.y
index cc6b972a3fed8a8eb7dc44627950b4a7a120e38e..18e730548d3d6878f3c63829a4275629164e03f7 100755
--- a/old_parser/fun_with_bison/ielr_grammar.y
+++ b/old_parser/fun_with_bison/ielr_grammar.y
@@ -10,13 +10,19 @@
 %token SMALL_D
 %token SMALL_E
 
+%token SMALL_K
 
 
 /* Grammar follows */
 %%
 
 
-BIG_S:    SMALL_B BIG_A
+BIG_START: BIG_SUB SMALL_K BIG_SUB
+         | BIG_SUB
+
+
+
+BIG_SUB:    SMALL_B BIG_A
         | SMALL_C BIG_A
         | SMALL_D BIG_APRIME
         | SMALL_E BIG_APRIME