Resultados posibles:
estabas inventando
-you were inventing
Imperfecto progresivo para el sujeto del verbo inventar.
estabas inventando
-you were inventing
Imperfecto progresivo para el sujeto vos del verbo inventar.

inventar

¿Qué era lo que estabas inventando?
What was it you were inventing?
Palabra del día
el higo