          2.5  1  8.2

(   2.0.23.9  ) 

 .
1.     1  8.2
2.         2.5
3.    
	  
	     1     
	      1
	     2.5            1  8.1
	       1  8.2


!!!!           2.5  
1-    8.2           .
   1-   8.2         .

           .