diff -r 44383203970f -r e2170c91a9f2 pre_marking3/mk
--- a/pre_marking3/mk	Fri Jan 15 02:47:51 2021 +0000
+++ b/pre_marking3/mk	Mon Jan 18 22:12:39 2021 +0000
@@ -20,7 +20,7 @@
   rm postfix_test1.scala
   rm postfix_test2.scala
   rm postfix_test3.scala
-  rm postfix_test3.scala
+  rm postfix_test4.scala
   cd ..
   cd ..
 done