C131121333133313233213331333133313331312111133133313331323223313131   >>    C13112133313331323321333133313331333131211113313331333132322331313   <<    C131121333133313233213331333133313331312111133133313331323223313133   >>      C131121333133313233213331333133313331312111133133313331323223313132   >>