C131121333133313233213331333133313331312111133133313331313231333131   >>    C13112133313331323321333133313331333131211113313331333131323133313   <<    C131121333133313233213331333133313331312111133133313331313231333133   >>      C131121333133313233213331333133313331312111133133313331313231333132   >>