C1111121111331311211331333133313331333112211231211113313232232113223311   >>    C111112111133131121133133313331333133311221123121111331323223211322331   <<    C1111121111331311211331333133313331333112211231211113313232232113223313   >>      C1111121111331311211331333133313331333112211231211113313232232113223312   >>