C131121333133313233213331333133313331333133313331333133311231323331   >>    C13112133313331323321333133313331333133313331333133313331123132333   <<    C131121333133313233213331333133313331333133313331333133311231323333   >>      C131121333133313233213331333133313331333133313331333133311231323332   >>