
  neq
  
    
      
        
          first[first]
        
          first[second]
        
          first[third]
        
      
    
      
        
          second[first]
        
          second[second]
        
          second[third]
        
      
    
      
        
          third[first]
        
          third[second]
        
          third[third]
        
      
    
  

