C131121333133313233213331333133313331312111133133313331333132313121311   >>    C13112133313331323321333133313331333131211113313331333133313231312131   <<    C131121333133313233213331333133313331312111133133313331333132313121313   >>      C131121333133313233213331333133313331312111133133313331333132313121312   >>