C13112133313331323321333133313331333133313331313331322333131121   >>    C1311213331333132332133313331333133313331333131333132233313112   <<    C13112133313331323321333133313331333133313331313331322333131123   >>      C13112133313331323321333133313331333133313331313331322333131122   >>