hubieran supervisado
-they/you had supervised
Antecopréterito de subjuntivo para el sujetoellos/ellas/ustedesdel verbosupervisar.

supervisar

Si determinados países interesados hubieran aplicado esas resoluciones plenamente y si se hubieran supervisado con mayor eficacia, los angoleños de todo el país hubieran vivido mejor.
Had those resolutions been fully implemented by some concerned States and supervised more effectively, life could have been made better for all Angolans throughout the country.
Palabra del día
poco profundo