C13112133313331323321333133313331333131211113313331333133313331311221123121   >>    C1311213331333132332133313331333133313121111331333133313331333131122112312   <<    C13112133313331323321333133313331333131211113313331333133313331311221123123   >>      C13112133313331323321333133313331333131211113313331333133313331311221123122   >>