diff -r 114a89518aea -r 4383809c176a testing3/re1e_test.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing3/re1e_test.scala	Thu Nov 23 10:56:47 2017 +0000
@@ -0,0 +1,19 @@
+
+import scala.concurrent._
+import scala.concurrent.duration._
+import ExecutionContext.Implicits.global
+import scala.language.postfixOps 
+import scala.language.reflectiveCalls
+
+lazy val f = Future {
+  import CW8a._
+
+  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)
+}
+
+Await.result(f, 120 second)