English verb conjugation
COULD PULL

Regular verb: pull - pulled - pulled

Affirmation

Simple form	V-ing form
I could pull you could pull he could pull we could pull you could pull they could pull	I could be pulling you could be pulling he could be pulling we could be pulling you could be pulling they could be pulling
Perfect	V-ing perfect
I could have pulled you could have pulled he could have pulled we could have pulled you could have pulled they could have pulled	I could have been pulling you could have been pulling he could have been pulling we could have been pulling you could have been pulling they could have been pulling

Negation

Simple form	V-ing form
I could not pull you could not pull he could not pull we could not pull you could not pull they could not pull	I could not be pulling you could not be pulling he could not be pulling we could not be pulling you could not be pulling they could not be pulling
Perfect	V-ing perfect
I could not have pulled you could not have pulled he could not have pulled we could not have pulled you could not have pulled they could not have pulled	I could not have been pulling you could not have been pulling he could not have been pulling we could not have been pulling you could not have been pulling they could not have been pulling

Interrogative form

Simple form	V-ing form
could I pull? could you pull? could he pull? could we pull? could you pull? could they pull?	could I be pulling? could you be pulling? could he be pulling? could we be pulling? could you be pulling? could they be pulling?
Perfect	V-ing perfect
could I have pulled? could you have pulled? could he have pulled? could we have pulled? could you have pulled? could they have pulled?	could I have been pulling? could you have been pulling? could he have been pulling? could we have been pulling? could you have been pulling? could they have been pulling?

Interro-negative form

Simple form	V-ing form
could I not pull? could you not pull? could he not pull? could we not pull? could you not pull? could they not pull?	could I not be pulling? could you not be pulling? could he not be pulling? could we not be pulling? could you not be pulling? could they not be pulling?
Perfect	V-ing perfect
could I not have pulled? could you not have pulled? could he not have pulled? could we not have pulled? could you not have pulled? could they not have pulled?	could I not have been pulling? could you not have been pulling? could he not have been pulling? could we not have been pulling? could you not have been pulling? could they not have been pulling?