C131121333133313233213331333133313331333133313231333131122331211113313233111   >>    C13112133313331323321333133313331333133313331323133313112233121111331323311   <<    C131121333133313233213331333133313331333133313231333131122331211113313233113   >>      C131121333133313233213331333133313331333133313231333131122331211113313233112   >>