:      
    

    

       

           
.   

            
            
                :
               
            
              
.           

              
.           

           :  
             
   .           
.      

          :  
   .           
              
             
. 

       :     
    .         
              
. 

               
     :       
.       

            
.             
            
.             

        :    
     .        
                
.

             
          :    
          .   
            
         .    
.             

            
         :     
         
              
            
           .  
.        

       :      
             
. 

          :   
. 