    
    
     : 

       

         " "
             
.          
             
             
.   
      " "    
" "         
.     
            
           
.  
          : 
            .
            
.           
  " "       
   " "       
  " "        
             
           
.

     : 
 ()         
       :  
              
            
.     
           
           
        (  )     
   ""        
.       
           
              
               
            
. 
           :  
             
.     
         
             
          .
             
             
              
.         
           
             
         
.