         
                                  
          
                    
                                                      
            
           
                               +      +          
          
  1.                   
                           
   1.       
                                                 
     
  2.         
                      
     
                               
   3.        
              
   
                           
    4.        
           
   
         
                                         
         
 
      
 
                               
                
                            
                                             
                                