C13112133313331323321333133313331333133313331311331333132322221221   >>    C1311213331333132332133313331333133313331333131133133313232222122   <<    C13112133313331323321333133313331333133313331311331333132322221223   >>      C13112133313331323321333133313331333133313331311331333132322221222   >>