hubieran construido
-they/you had built
Past perfect subjunctiveellos/ellas/ustedesconjugation ofconstruir.

construir

Un hijo de Catalino nacido ya en Tuluwás estudia hoy en esa escuelita, que no existiría si su padre y otros colonos no hubieran construido esa pequeña estructura de madera con techo de zinc.
Catalino's son, born in Tuluwás, now studies in the little school, which wouldn't exist if his father and other settlers hadn't built that small wooden structure with a tin roof.
Imagine que las zonas del dólar en los Estados Unidos se hubieran construido de la misma forma que la eurozona.
Imagine the US dollar zones had been constructed in the same way as the Eurozone.
No habría escasez de electricidad en California ni en los otros estados de la costa occidental de EU, si se hubieran construido las plantas que fueron canceladas.
California, and the rest of the Western states, would have no energy shortage, if the nuclear plants that were cancelled had been built.
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