C312312111111331312111133133313331333133313232233133313331333133313113313133221   >>    C31231211111133131211113313331333133313331323223313331333133313331311331313322   <<    C312312111111331312111133133313331333133313232233133313331333133313113313133223   >>      C312312111111331312111133133313331333133313232233133313331333133313113313133222   >>