C131121333133313233213331333133313331333133313211231333131332311   >>    C13112133313331323321333133313331333133313331321123133313133231   <<    C131121333133313233213331333133313331333133313211231333131332313   >>      C131121333133313233213331333133313331333133313211231333131332312   >>