C13112133313331323321333133313331333133313331333133313331312322321232333121   >>    C1311213331333132332133313331333133313331333133313331333131232232123233312   <<    C13112133313331323321333133313331333133313331333133313331312322321232333123   >>      C13112133313331323321333133313331333133313331333133313331312322321232333122   >>