C312312111133131121333133313113313331333133313331333121111331322223321   >>    C31231211113313112133313331311331333133313331333133312111133132222332   <<    C312312111133131121333133313113313331333133313331333121111331322223323   >>      C312312111133131121333133313113313331333133313331333121111331322223322   >>