diff -r e9d14d58be3c -r daf561a83ba6 main_marking3/re_test2.scala
--- a/main_marking3/re_test2.scala	Thu Jan 13 12:55:03 2022 +0000
+++ b/main_marking3/re_test2.scala	Mon Apr 11 23:55:27 2022 +0100
@@ -1,4 +1,4 @@
-import CW8c._
+import M3._
 
 assert(der('a', ZERO | ONE) == (ZERO | ZERO))
 assert(der('a', (CHAR('a') | ONE) ~ CHAR('a')) == ALT((ONE | ZERO) ~ CHAR('a'), ONE))