C13112133313331323321333133313331333133313331333133313331333133322133313112111   >>    C1311213331333132332133313331333133313331333133313331333133313332213331311211   <<    C13112133313331323321333133313331333133313331333133313331333133322133313112113   >>      C13112133313331323321333133313331333133313331333133313331333133322133313112112   >>