C13112133313331323321333133313331333133313331333133313331312322321211111221211   >>    C1311213331333132332133313331333133313331333133313331333131232232121111122121   <<    C13112133313331323321333133313331333133313331333133313331312322321211111221213   >>      C13112133313331323321333133313331333133313331333133313331312322321211111221212   >>