estuvieron generando
-they/you were generating
Preterite progressiveellos/ellas/ustedesconjugation ofgenerar.

generar

Mis primeros artículos de blog estuvieron generando 100+ comentarios muy rápido, a pesar de que tenía muy poco tráfico.
My early blog articles were gaining 100+ comments pretty quickly, even though my traffic was really low.
Word of the Day
to stalk