C13112133313331323321333133313331333133313121111331322132323111   >>    C1311213331333132332133313331333133313331312111133132213232311   <<    C13112133313331323321333133313331333133313121111331322132323113   >>      C13112133313331323321333133313331333133313121111331322132323112   >>