C131121333133313233213331333133313331333133313331313311232333131   >>    C13112133313331323321333133313331333133313331333131331123233313   <<    C131121333133313233213331333133313331333133313331313311232333133   >>      C131121333133313233213331333133313331333133313331313311232333132   >>