diff --git a/ch03/3.3/3.3.md b/ch03/3.3/3.3.md
index f4cb20db..43df7b79 100644
--- a/ch03/3.3/3.3.md
+++ b/ch03/3.3/3.3.md
@@ -103,10 +103,15 @@ a* b* ... z*
 4、
 
 ```
-want -> 0|A?0?1(A0?1|01)*A?0?|A0?
-A -> 0?2(02)*
+w   --> w_0|w_1|w_2| ... |w_9
+w_0 --> 0w_1|0w_2|0w_3| ... |0w_9|ε
+w_1 --> 1w_0|1w_2|1w_3| ... |1w_9|ε
+  ...
+w_9 --> 9w_0|9w_1|9w_3| ... |9w_8|ε
 ```
 
+
+
 Steps:
 
 step1. Transition diagram