| 3. | | | | | 18 | | 19 | | | 20 | 2012 | | 21 22 | | 23-24 | | | | 1. + = | | | | | | | | 2. | | | | | | | | | | | | | 3. | | | | | | 4 . | | | 15 | 1648 | 17 | | | | |