C131121333133313233213331333133313331333133313331333133313123223211111312231   >>    C13112133313331323321333133313331333133313331333133313331312322321111131223   <<    C131121333133313233213331333133313331333133313331333133313123223211111312233   >>      C131121333133313233213331333133313331333133313331333133313123223211111312232   >>