Possible Results:
hubiera tirado
Past perfect subjunctive yo conjugation of tirar.
hubiera tirado
Past perfect subjunctive él/ella/usted conjugation of tirar.

tirar

Y si se hubiera tirado esta moneda 1.000 veces, se estaría muy cerca del 50% de cara y del 50% de cruz.
And if you had tossed up this coin 1000 times, you would have got quite close to 50% heads and 50% tails.
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hammock