C131121333133313233213331333133313331333133313231333131121132323131   >>    C13112133313331323321333133313331333133313331323133313112113232313   <<    C131121333133313233213331333133313331333133313231333131121132323133   >>      C131121333133313233213331333133313331333133313231333131121132323132   >>