C1111233131211111211113313331333133313232313331333131133112112231   >>    C111123313121111121111331333133313331323231333133313113311211223   <<    C1111233131211111211113313331333133313232313331333131133112112233   >>      C1111233131211111211113313331333133313232313331333131133112112232   >>