C1111121111331311211331333133313331333133313232212111112111111211   >>    C111112111133131121133133313331333133313331323221211111211111121   <<    C1111121111331311211331333133313331333133313232212111112111111213   >>      C1111121111331311211331333133313331333133313232212111112111111212   >>