C131121333133313233213331333133313331333133313331333133313331333211333231   >>    C13112133313331323321333133313331333133313331333133313331333133321133323   <<    C131121333133313233213331333133313331333133313331333133313331333211333233   >>      C131121333133313233213331333133313331333133313331333133313331333211333232   >>