C131121333133313233213331333133313331312111133133313331311322321   >>    C13112133313331323321333133313331333131211113313331333131132232   <<    C131121333133313233213331333133313331312111133133313331311322323   >>      C131121333133313233213331333133313331312111133133313331311322322   >>