English verb conjugation
COULD OVERSTOCK

Regular verb: overstock - overstocked - overstocked

Affirmation

Simple form	V-ing form
I could overstock you could overstock he could overstock we could overstock you could overstock they could overstock	I could be overstocking you could be overstocking he could be overstocking we could be overstocking you could be overstocking they could be overstocking
Perfect	V-ing perfect
I could have overstocked you could have overstocked he could have overstocked we could have overstocked you could have overstocked they could have overstocked	I could have been overstocking you could have been overstocking he could have been overstocking we could have been overstocking you could have been overstocking they could have been overstocking

Negation

Simple form	V-ing form
I could not overstock you could not overstock he could not overstock we could not overstock you could not overstock they could not overstock	I could not be overstocking you could not be overstocking he could not be overstocking we could not be overstocking you could not be overstocking they could not be overstocking
Perfect	V-ing perfect
I could not have overstocked you could not have overstocked he could not have overstocked we could not have overstocked you could not have overstocked they could not have overstocked	I could not have been overstocking you could not have been overstocking he could not have been overstocking we could not have been overstocking you could not have been overstocking they could not have been overstocking

Interrogative form

Simple form	V-ing form
could I overstock? could you overstock? could he overstock? could we overstock? could you overstock? could they overstock?	could I be overstocking? could you be overstocking? could he be overstocking? could we be overstocking? could you be overstocking? could they be overstocking?
Perfect	V-ing perfect
could I have overstocked? could you have overstocked? could he have overstocked? could we have overstocked? could you have overstocked? could they have overstocked?	could I have been overstocking? could you have been overstocking? could he have been overstocking? could we have been overstocking? could you have been overstocking? could they have been overstocking?

Interro-negative form

Simple form	V-ing form
could I not overstock? could you not overstock? could he not overstock? could we not overstock? could you not overstock? could they not overstock?	could I not be overstocking? could you not be overstocking? could he not be overstocking? could we not be overstocking? could you not be overstocking? could they not be overstocking?
Perfect	V-ing perfect
could I not have overstocked? could you not have overstocked? could he not have overstocked? could we not have overstocked? could you not have overstocked? could they not have overstocked?	could I not have been overstocking? could you not have been overstocking? could he not have been overstocking? could we not have been overstocking? could you not have been overstocking? could they not have been overstocking?