C13112133313331323321333133313331333133313331333133313331333133311222131221   >>    C1311213331333132332133313331333133313331333133313331333133313331122213122   <<    C13112133313331323321333133313331333133313331333133313331333133311222131223   >>      C13112133313331323321333133313331333133313331333133313331333133311222131222   >>