:  
   
  " "
         "   
             " 
.         
     
                
.     

   -    

   :    " "
.         
:        
             
.    
     "        
   :     "     
                
.         
 "            "
.        
        : 
                
              
.  
         
      :  "    "
                
.     
    "        "
          :   
              
              
.          