English verb conjugation
COULD PUG

Regular verb: pug - pugged - pugged

Affirmation

Simple form	V-ing form
I could pug you could pug he could pug we could pug you could pug they could pug	I could be pugging you could be pugging he could be pugging we could be pugging you could be pugging they could be pugging
Perfect	V-ing perfect
I could have pugged you could have pugged he could have pugged we could have pugged you could have pugged they could have pugged	I could have been pugging you could have been pugging he could have been pugging we could have been pugging you could have been pugging they could have been pugging

Negation

Simple form	V-ing form
I could not pug you could not pug he could not pug we could not pug you could not pug they could not pug	I could not be pugging you could not be pugging he could not be pugging we could not be pugging you could not be pugging they could not be pugging
Perfect	V-ing perfect
I could not have pugged you could not have pugged he could not have pugged we could not have pugged you could not have pugged they could not have pugged	I could not have been pugging you could not have been pugging he could not have been pugging we could not have been pugging you could not have been pugging they could not have been pugging

Interrogative form

Simple form	V-ing form
could I pug? could you pug? could he pug? could we pug? could you pug? could they pug?	could I be pugging? could you be pugging? could he be pugging? could we be pugging? could you be pugging? could they be pugging?
Perfect	V-ing perfect
could I have pugged? could you have pugged? could he have pugged? could we have pugged? could you have pugged? could they have pugged?	could I have been pugging? could you have been pugging? could he have been pugging? could we have been pugging? could you have been pugging? could they have been pugging?

Interro-negative form

Simple form	V-ing form
could I not pug? could you not pug? could he not pug? could we not pug? could you not pug? could they not pug?	could I not be pugging? could you not be pugging? could he not be pugging? could we not be pugging? could you not be pugging? could they not be pugging?
Perfect	V-ing perfect
could I not have pugged? could you not have pugged? could he not have pugged? could we not have pugged? could you not have pugged? could they not have pugged?	could I not have been pugging? could you not have been pugging? could he not have been pugging? could we not have been pugging? could you not have been pugging? could they not have been pugging?