C13112133313331323321333133313331333133313331333133313211231223213131   >>    C1311213331333132332133313331333133313331333133313331321123122321313   <<    C13112133313331323321333133313331333133313331333133313211231223213133   >>      C13112133313331323321333133313331333133313331333133313211231223213132   >>