C31231211113313121211113313331333133313331213331323133313223332233312121   >>    C3123121111331312121111331333133313331333121333132313331322333223331212   <<    C31231211113313121211113313331333133313331213331323133313223332233312123   >>      C31231211113313121211113313331333133313331213331323133313223332233312122   >>