C31231211111133131211113313331333133313332233133313331331122133312121   >>    C3123121111113313121111331333133313331333223313331333133112213331212   <<    C31231211111133131211113313331333133313332233133313331331122133312123   >>      C31231211111133131211113313331333133313332233133313331331122133312122   >>