C131121333133313233213331333133313331333133331211113313331323213112111   >>    C13112133313331323321333133313331333133313333121111331333132321311211   <<    C131121333133313233213331333133313331333133331211113313331323213112113   >>      C131121333133313233213331333133313331333133331211113313331323213112112   >>