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