4. 2 2 . 3 6 . :
2 . 3 .
1 (): .., * 2 .., 2 .., * 2 .., ..
2, 6 (): .., * 2 .., 2 .., * 2 .., ..
3 : .., * 2 .., , 1 .., 2 .., , * 2 .., ..
4 : .., * 2 .., , 2 .., , * 2 .., ..
5 : .., * 2 .., 2 ( 4 1 .. ),* 2 .., ..
3 6 .
_____
1, 2, 6 : * 2 .., 2 ..*
3 : * 2 .., , 1 .., 2 .., *
4 : * 2 .., 1 , 2 .., 1 *
5 : * 2 .., 2 ( 4 1 .. )*
.