C31231211113313121211113313331333133313331213331333133313222213131   >>    C3123121111331312121111331333133313331333121333133313331322221313   <<    C31231211113313121211113313331333133313331213331333133313222213133   >>      C31231211113313121211113313331333133313331213331333133313222213132   >>