C313212111133131211331333133313331333131133133313113313331333133313232231   >>    C31321211113313121133133313331333133313113313331311331333133313331323223   <<    C313212111133131211331333133313331333131133133313113313331333133313232233   >>      C313212111133131211331333133313331333131133133313113313331333133313232232   >>