--- a/core_solution2/docdiff.scala	Mon Nov 08 00:17:50 2021 +0000
+++ b/core_solution2/docdiff.scala	Mon Nov 08 01:03:09 2021 +0000
@@ -2,7 +2,7 @@
 //========================================
 
 
-object CW7a { 
+object C2 { 
 
 //(1) Complete the clean function below. It should find
 //    all words in a string using the regular expression