C13112133313331323321333133313331333133313331333133313331312322321211111122121   >>    C1311213331333132332133313331333133313331333133313331333131232232121111112212   <<    C13112133313331323321333133313331333133313331333133313331312322321211111122123   >>      C13112133313331323321333133313331333133313331333133313331312322321211111122122   >>