C13112133313331323321333133313331333133313331333132112312132311   >>    C1311213331333132332133313331333133313331333133313211231213231   <<    C13112133313331323321333133313331333133313331333132112312132313   >>      C13112133313331323321333133313331333133313331333132112312132312   >>