C13112133313331323321333133313331333133313331311331333121111123213221   >>    C1311213331333132332133313331333133313331333131133133312111112321322   <<    C13112133313331323321333133313331333133313331311331333121111123213223   >>      C13112133313331323321333133313331333133313331311331333121111123213222   >>