C131121333133313233213331333133313331333133313231333131121133132212111   >>    C13112133313331323321333133313331333133313331323133313112113313221211   <<    C131121333133313233213331333133313331333133313231333131121133132212113   >>      C131121333133313233213331333133313331333133313231333131121133132212112   >>