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| 20x-9=15 | | 20x-9=14 | | 20x-9=13 | | 20x-9=12 | | 20x-9=11 | | 20x-9=10 | | 20x-9=9 | | 20x-9=8 | | 20x-9=7 | | 20x-9=6 | | 20x-9=5 | | 20x-9=4 | | 20x-9=3 | | 20x-9=2 | | 20x-9=1 | | 20x-8=20 | | 20x-8=19 | | 20x-8=18 | | 20x-8=17 | | 20x-8=16 | | 20x-8=15 | | 20x-8=14 | | 20x-8=13 | | 20x-8=12 | | 20x-8=11 | | 20x-8=10 | | 20x-8=9 | | 20x-8=8 | | 20x-8=7 | | 20x-8=6 | | 20x-8=5 | | 20x-8=4 |