6+14 - 20, 12+8 - 20, 9+7 - 16, 4+6 - 10, 13+4 - 17, 7+6 - 13, 9+9 - 18, 5+13 - 18, 10+3 - 13, 9+4 - 13, 8+11 - 19, 1+19 - 20, 15+3 - 18, 7+11 - 18, 18+2 - 20, 14+5 - 19, 17+13 - 30, 12+18 - 30, 15+5 - 20, 20+6 - 26,

Addition up to 20

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