                   .


          
   .


          
 .     :






          
.        .  
            
    ()   .    
        .
         
    .       
   .

-
-
-
-
-


    

./add_derivative_words.pl < words.txt


         -  . 
         .
           
 .      
()       .  
          
(  )        .


          
     :

./sort_words_in_data_files.pl
./find_identical_words


         . 
  :

./check_all


        .   
   .
