2 

     2 

     3 val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))

     3 val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))

     4 

     4 

     5 assert(ders(("a" * 5).toList, EVIL_urban) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b')))

     5 assert(ders(("a" * 5).toList, EVIL_urban) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b')))

     6 assert(ders(List('b'), EVIL_urban) == ONE)

     6 assert(ders(List('b'), EVIL_urban) == ONE)