2.
(a) .
. , , .
(b)
, , , .
(c) ,
, , , . , , .
(d)
, , , . , , .
4.2.
:
(a)
, .
| " " | ||
| "" | ||
| "" | ; 1 | |
| "" | Ƹ ; 1 | |
| " " | ; 1 |
(b)
| " " | ||
| " " | ; 1 | |
| " " | ; 1 |
4.3. ; ;
(a) " " , , , , .
(b) , , 10 " " . , .
(c) , , 15 " " .
4.4.
41 41.1. 41.2:
" , . , , . ".
|
|
|
5.
5 , , .
5.1.
(a) . : 4- , , 10- , .
(b) , . , .
