C1111121111331311211331333133313331333133313232212111112111133133313222331211   >>    C111112111133131121133133313331333133313331323221211111211113313331322233121   <<    C1111121111331311211331333133313331333133313232212111112111133133313222331213   >>      C1111121111331311211331333133313331333133313232212111112111133133313222331212   >>