: 400-500 . ( ) 6-8 . ( ) 1 1 ( , , ). 1 () 4-5 3 .. ( , , , , .) " " "" "" : , . 2 . . . , , . . , , . . 30-40 . , . , 180 . . "" . . " " . "" . . 180 1 - . . . , , . !