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

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