C1111121111331311211331333133313331333133313232212111112111113331121   >>    C111112111133131121133133313331333133313331323221211111211111333112   <<    C1111121111331311211331333133313331333133313232212111112111113331123   >>      C1111121111331311211331333133313331333133313232212111112111113331122   >>