C131121333133313233213331333133313331333133313231333131122112313331   >>    C13112133313331323321333133313331333133313331323133313112211231333   <<    C131121333133313233213331333133313331333133313231333131122112313333   >>      C131121333133313233213331333133313331333133313231333131122112313332   >>