C111113331333132322331333133313331331121111121133133313121111121233112211   >>    C11111333133313232233133313331333133112111112113313331312111112123311221   <<    C111113331333132322331333133313331331121111121133133313121111121233112213   >>      C111113331333132322331333133313331331121111121133133313121111121233112212   >>