| | | | | | | | | | | | | | | 4.2 | 1.7 | | | | | | | | 1 23 2 20 | | | | | | | | | | | 1 1 23 2 | 3 | | | 2 2 4 2 | 20 | | | | 3 2 20 | | | | | | | | | 1 | | | | | | | | 2 | | | | | | | | | | | |