C1111121111331311211331333133313331333133313221211113313331333133313122121111   >>    C111112111133131121133133313331333133313331322121111331333133313331312212111   <<    C1111121111331311211331333133313331333133313221211113313331333133313122121113   >>      C1111121111331311211331333133313331333133313221211113313331333133313122121112   >>