C13112133313331323321333133313331333133313331333131333132212231   >>    C1311213331333132332133313331333133313331333133313133313221223   <<    C13112133313331323321333133313331333133313331333131333132212233   >>      C13112133313331323321333133313331333133313331333131333132212232   >>