C31231211111133131211113313331333133313331323133313231323133313232233121   >>    C3123121111113313121111331333133313331333132313331323132313331323223312   <<    C31231211111133131211113313331333133313331323133313231323133313232233123   >>      C31231211111133131211113313331333133313331323133313231323133313232233122   >>