C13112133313331323321333133313331333133313121111331311331313221   >>    C1311213331333132332133313331333133313331312111133131133131322   <<    C13112133313331323321333133313331333133313121111331311331313223   >>      C13112133313331323321333133313331333133313121111331311331313222   >>