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