diff -r 2be8c4c77418 -r b153c04834eb progs/re2.scala
--- a/progs/re2.scala	Sun Sep 30 23:38:38 2018 +0100
+++ b/progs/re2.scala	Mon Oct 01 01:11:42 2018 +0100
@@ -122,3 +122,5 @@
 size(ders("aaaa".toList, EVIL2))   // 116
 size(ders("aaaaa".toList, EVIL2))  // 230
 size(ders("aaaaaa".toList, EVIL2)) // 456
+
+size(ders(("a" * 20).toList, EVIL2)) // 7340068
\ No newline at end of file