C1111121111331311211331333133313331333133313232212111112111133133323221   >>    C111112111133131121133133313331333133313331323221211111211113313332322   <<    C1111121111331311211331333133313331333133313232212111112111133133323223   >>      C1111121111331311211331333133313331333133313232212111112111133133323222   >>