:     

    

 

       

  



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

             
              
              
        .    
             
              
     .        
             
.         

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

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