C13112133313331323321333133313331333133313331333132112312312231   >>    C1311213331333132332133313331333133313331333133313211231231223   <<    C13112133313331323321333133313331333133313331333132112312312233   >>      C13112133313331323321333133313331333133313331333132112312312232   >>