C131121333133313233213331333133313331333133313231333131122112322311   >>    C13112133313331323321333133313331333133313331323133313112211232231   <<    C131121333133313233213331333133313331333133313231333131122112322313   >>      C131121333133313233213331333133313331333133313231333131122112322312   >>