C131121333133313233213331333133313331333133331211113313331323213211   >>    C13112133313331323321333133313331333133313333121111331333132321321   <<    C131121333133313233213331333133313331333133331211113313331323213213   >>      C131121333133313233213331333133313331333133331211113313331323213212   >>