Resultados posibles:
estabas mascando
-you were chewing
Imperfecto progresivo para el sujeto del verbo mascar.
estabas mascando
-you were chewing
Imperfecto progresivo para el sujeto vos del verbo mascar.

mascar

Lo sé, estabas mascando... Si, estabas mascando mucho.
I know, were you chewing— Yeah, you were chewing a lot.
Palabra del día
la leña