C131121333133313233213331333133313331333133313331333131111331323133312111   >>    C13112133313331323321333133313331333133313331333133313111133132313331211   <<    C131121333133313233213331333133313331333133313331333131111331323133312113   >>      C131121333133313233213331333133313331333133313331333131111331323133312112   >>