C13112133313331323321333133313331333133313331333133313331312322321131123121   >>    C1311213331333132332133313331333133313331333133313331333131232232113112312   <<    C13112133313331323321333133313331333133313331333133313331312322321131123123   >>      C13112133313331323321333133313331333133313331333133313331312322321131123122   >>