C131121333133313233213331333133313331333133313231333131122112322331   >>    C13112133313331323321333133313331333133313331323133313112211232233   <<    C131121333133313233213331333133313331333133313231333131122112322333   >>      C131121333133313233213331333133313331333133313231333131122112322332   >>