C13112133313331323321333133313331333131211113313331333132212123231   >>    C1311213331333132332133313331333133313121111331333133313221212323   <<    C13112133313331323321333133313331333131211113313331333132212123233   >>      C13112133313331323321333133313331333131211113313331333132212123232   >>