C131121333133313233213331333133313331333133313331333133313331322133313123221   >>    C13112133313331323321333133313331333133313331333133313331333132213331312322   <<    C131121333133313233213331333133313331333133313331333133313331322133313123223   >>      C131121333133313233213331333133313331333133313331333133313331322133313123222   >>