C1111233131211111211113313331333133313232313331333131122223132231   >>    C111123313121111121111331333133313331323231333133313112222313223   <<    C1111233131211111211113313331333133313232313331333131122223132233   >>      C1111233131211111211113313331333133313232313331333131122223132232   >>