C131121333133313233213331333133313331333133313133313331333231333131   >>    C13112133313331323321333133313331333133313331313331333133323133313   <<    C131121333133313233213331333133313331333133313133313331333231333133   >>      C131121333133313233213331333133313331333133313133313331333231333132   >>