diff -r 663c2a9108d1 -r 4de31fdc0d67 testing4/re_test5.scala
--- a/testing4/re_test5.scala	Sun Nov 01 01:21:31 2020 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,8 +0,0 @@
-import CW9c._ 
-val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
-
-assert(size(der('a', der('a', EVIL_urban))) == 28)
-assert(size(der('a', der('a', der('a', EVIL_urban)))) == 58)
-
-assert(size(ders("aaaaaa".toList, EVIL_urban)) == 8)
-assert(size(ders(("a" * 50).toList, EVIL_urban)) == 8)