C312312111133131121333133313113313331333133313331333133313331333132323231311   >>    C31231211113313112133313331311331333133313331333133313331333133313232323131   <<    C312312111133131121333133313113313331333133313331333133313331333132323231313   >>      C312312111133131121333133313113313331333133313331333133313331333132323231312   >>