hubieran aportado
Antecopréterito de subjuntivo para el sujeto ellos/ellas/ustedes del verbo aportar.

aportar

La Comisión subrayó a este respecto que Portugal no había presentado elementos de prueba que demostraran que en el momento en que ENVC firmó el contrato se hubieran aportado garantías públicas de que el astillero recibiría una ayuda.
The Commission noted, in this respect, that Portugal had not provided evidence that, at the time ENVC signed the contract, there were any public assurances that the shipyard would obtain the aid.
Era sorprendente que solo se hubiera pretendido justificar las alegaciones con especulaciones teóricas, que no correspondían a la realidad del comercio, y que no se hubieran aportado pruebas concretas de operaciones de importación donde se hubieran liquidado derechos por encima del 35 por ciento.
It was surprising that the attempt to justify the allegations had been based solely on theoretical speculation which did not correspond to the realities of trade and that no concrete evidence had been provided of import operations in which duties in excess of 35 per cent had been assessed.
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