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