C312312111111331312111133133313331333121111331333133313331311331323223321   >>    C31231211111133131211113313331333133312111133133313331333131133132322332   <<    C312312111111331312111133133313331333121111331333133313331311331323223323   >>      C312312111111331312111133133313331333121111331333133313331311331323223322   >>