hubieran tensado
-they/you had tightened
Past perfect subjunctiveellos/ellas/ustedesconjugation oftensar.

tensar

Es evidente que en su Informe, Zedillo eludió los temas y los tonos que hubieran tensado aún más el ambiente político dentro y fuera del Congreso de la Unión.
It is evident that in his report Zedillo eluded the issues and tones that would have made the political atmosphere within Congress and outside of it even more tense.
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