:   

     

        

    

     

            
           
              
              
              
                
 (  )           
              
              
               
                 
                 
                
                
                
              
                 
                
               
              
                
                 
                
                
              
                 
               
              
              
             
              
              
                 
                  
                  
               
               
             
               
             .   
                
                  
.              

      //        
             
             
               
               
                
              
           
.         

)             
.         

              
             
.             
            
             
               
. 

  

  

     

   

        

(   )

   