erigiesen
-they/you built
Imperfecto de subjuntivo para el sujetoellos/ellas/ustedesdel verboerigir.

erigir

Si se frenase o invirtiese el proceso tendiente a la eliminación de dichas anormalidades, o si éstas se erigiesen en sistema, se presentaría con extrema gravedad el peligro de una recaída en el oportunismo.
If the process were to be reversed or halted in an attempt to eliminate such abnormalities, or if the latter were to become the norm, there would be an extremely serious risk of a relapse into opportunism.
Palabra del día
la canela