C13112133313331323321333133313331333133313331311211331312133311   >>    C1311213331333132332133313331333133313331333131121133131213331   <<    C13112133313331323321333133313331333133313331311211331312133313   >>      C13112133313331323321333133313331333133313331311211331312133312   >>