diff --git a/parser.rb b/parser.rb
index adaad3e..c6976e7 100644
--- a/parser.rb
+++ b/parser.rb
@@ -1,3 +1,4 @@
 def word_in_string?(word, string)
-  # implement with your code here
+  pattern = /(\b|[_])#{word}(\b|[_])/
+  pattern=~string ? :yes : :no
 end