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start :: fn { a := 0 for i := 0, i < 3, i = i + 1 { a = a + i } a <=> 3 a = 0 for i := 0, i <= 3, i = i + 1 { a = a + i } a <=> 6 a = 0 for i := 0, i < 3, i = i + 1 { for j := 0, j < 3, j = j + 1 { a = a + i * j } } a <=> 9 }