| | | | | | | | | 3 | | | 1 ( ) | | | | 10 70 | | 1 2 | 3 … 1 | 15 | 1 | 2 | ( ) | | 10-20 1 | 10 | 1 | 30 | | 3 | | … | 40 | 10 10 | 30 2-3 10 | 10 1 | | | |