C111112111133131121133133313331333133313221333133313232233312111   >>    C11111211113313112113313331333133313331322133313331323223331211   <<    C111112111133131121133133313331333133313221333133313232233312113   >>      C111112111133131121133133313331333133313221333133313232233312112   >>