C1111121111331311211331333133313331333133313231333133313331333133313233112211   >>    C111112111133131121133133313331333133313331323133313331333133313331323311221   <<    C1111121111331311211331333133313331333133313231333133313331333133313233112213   >>      C1111121111331311211331333133313331333133313231333133313331333133313233112212   >>