C131121333133313233213331333133313331333133313331333133313331333131122213221   >>    C13112133313331323321333133313331333133313331333133313331333133313112221322   <<    C131121333133313233213331333133313331333133313331333133313331333131122213223   >>      C131121333133313233213331333133313331333133313331333133313331333131122213222   >>