C1111121111331311211331333133313331333133313221211111323133313232221   >>    C111112111133131121133133313331333133313331322121111132313331323222   <<    C1111121111331311211331333133313331333133313221211111323133313232223   >>      C1111121111331311211331333133313331333133313221211111323133313232222   >>