C312312111111331312111133133313331333133313232233133313331333133313113322231321   >>    C31231211111133131211113313331333133313331323223313331333133313331311332223132   <<    C312312111111331312111133133313331333133313232233133313331333133313113322231323   >>      C312312111111331312111133133313331333133313232233133313331333133313113322231322   >>