English verb conjugation
COULD PLUMP

Regular verb: plump - plumped - plumped

Affirmation

Simple form	V-ing form
I could plump you could plump he could plump we could plump you could plump they could plump	I could be plumping you could be plumping he could be plumping we could be plumping you could be plumping they could be plumping
Perfect	V-ing perfect
I could have plumped you could have plumped he could have plumped we could have plumped you could have plumped they could have plumped	I could have been plumping you could have been plumping he could have been plumping we could have been plumping you could have been plumping they could have been plumping

Negation

Simple form	V-ing form
I couldn't plump you couldn't plump he couldn't plump we couldn't plump you couldn't plump they couldn't plump	I couldn't be plumping you couldn't be plumping he couldn't be plumping we couldn't be plumping you couldn't be plumping they couldn't be plumping
Perfect	V-ing perfect
I couldn't have plumped you couldn't have plumped he couldn't have plumped we couldn't have plumped you couldn't have plumped they couldn't have plumped	I couldn't have been plumping you couldn't have been plumping he couldn't have been plumping we couldn't have been plumping you couldn't have been plumping they couldn't have been plumping

Interrogative form

Simple form	V-ing form
could I plump? could you plump? could he plump? could we plump? could you plump? could they plump?	could I be plumping? could you be plumping? could he be plumping? could we be plumping? could you be plumping? could they be plumping?
Perfect	V-ing perfect
could I have plumped? could you have plumped? could he have plumped? could we have plumped? could you have plumped? could they have plumped?	could I have been plumping? could you have been plumping? could he have been plumping? could we have been plumping? could you have been plumping? could they have been plumping?

Interro-negative form

Simple form	V-ing form
couldn't I plump? couldn't you plump? couldn't he plump? couldn't we plump? couldn't you plump? couldn't they plump?	couldn't I be plumping? couldn't you be plumping? couldn't he be plumping? couldn't we be plumping? couldn't you be plumping? couldn't they be plumping?
Perfect	V-ing perfect
couldn't I have plumped? couldn't you have plumped? couldn't he have plumped? couldn't we have plumped? couldn't you have plumped? couldn't they have plumped?	couldn't I have been plumping? couldn't you have been plumping? couldn't he have been plumping? couldn't we have been plumping? couldn't you have been plumping? couldn't they have been plumping?