C131121333133313233213331333133313331333133313113313331211331131   >>    C13112133313331323321333133313331333133313331311331333121133113   <<    C131121333133313233213331333133313331333133313113313331211331133   >>      C131121333133313233213331333133313331333133313113313331211331132   >>