English verb conjugation
COULD PUG

Regular verb: pug - pugged - pugged

Affirmation

Simple form	V-ing form
I could pug you could pug she could pug we could pug you could pug they could pug	I could be pugging you could be pugging she 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 she 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 she 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 couldn't pug you couldn't pug she couldn't pug we couldn't pug you couldn't pug they couldn't pug	I couldn't be pugging you couldn't be pugging she couldn't be pugging we couldn't be pugging you couldn't be pugging they couldn't be pugging
Perfect	V-ing perfect
I couldn't have pugged you couldn't have pugged she couldn't have pugged we couldn't have pugged you couldn't have pugged they couldn't have pugged	I couldn't have been pugging you couldn't have been pugging she couldn't have been pugging we couldn't have been pugging you couldn't have been pugging they couldn't have been pugging

Interrogative form

Simple form	V-ing form
could I pug? could you pug? could she pug? could we pug? could you pug? could they pug?	could I be pugging? could you be pugging? could she 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 she 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 she 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
couldn't I pug? couldn't you pug? couldn't she pug? couldn't we pug? couldn't you pug? couldn't they pug?	couldn't I be pugging? couldn't you be pugging? couldn't she be pugging? couldn't we be pugging? couldn't you be pugging? couldn't they be pugging?
Perfect	V-ing perfect
couldn't I have pugged? couldn't you have pugged? couldn't she have pugged? couldn't we have pugged? couldn't you have pugged? couldn't they have pugged?	couldn't I have been pugging? couldn't you have been pugging? couldn't she have been pugging? couldn't we have been pugging? couldn't you have been pugging? couldn't they have been pugging?