C131121333133313233213331333133313331333133313331333133313331333313112131   >>    C13112133313331323321333133313331333133313331333133313331333133331311213   <<    C131121333133313233213331333133313331333133313331333133313331333313112133   >>      C131121333133313233213331333133313331333133313331333133313331333313112132   >>