C31231211113311331323133313331333133313331121323132313232233121   >>    C3123121111331133132313331333133313331333112132313231323223312   <<    C31231211113311331323133313331333133313331121323132313232233123   >>      C31231211113311331323133313331333133313331121323132313232233122   >>