English verb conjugation
COULD UPHOLSTER

Regular verb: upholster - upholstered - upholstered

Affirmation

Simple form	V-ing form
I could upholster you could upholster he could upholster we could upholster you could upholster they could upholster	I could be upholstering you could be upholstering he could be upholstering we could be upholstering you could be upholstering they could be upholstering
Perfect	V-ing perfect
I could have upholstered you could have upholstered he could have upholstered we could have upholstered you could have upholstered they could have upholstered	I could have been upholstering you could have been upholstering he could have been upholstering we could have been upholstering you could have been upholstering they could have been upholstering

Negation

Simple form	V-ing form
I couldn't upholster you couldn't upholster he couldn't upholster we couldn't upholster you couldn't upholster they couldn't upholster	I couldn't be upholstering you couldn't be upholstering he couldn't be upholstering we couldn't be upholstering you couldn't be upholstering they couldn't be upholstering
Perfect	V-ing perfect
I couldn't have upholstered you couldn't have upholstered he couldn't have upholstered we couldn't have upholstered you couldn't have upholstered they couldn't have upholstered	I couldn't have been upholstering you couldn't have been upholstering he couldn't have been upholstering we couldn't have been upholstering you couldn't have been upholstering they couldn't have been upholstering

Interrogative form

Simple form	V-ing form
could I upholster? could you upholster? could he upholster? could we upholster? could you upholster? could they upholster?	could I be upholstering? could you be upholstering? could he be upholstering? could we be upholstering? could you be upholstering? could they be upholstering?
Perfect	V-ing perfect
could I have upholstered? could you have upholstered? could he have upholstered? could we have upholstered? could you have upholstered? could they have upholstered?	could I have been upholstering? could you have been upholstering? could he have been upholstering? could we have been upholstering? could you have been upholstering? could they have been upholstering?

Interro-negative form

Simple form	V-ing form
couldn't I upholster? couldn't you upholster? couldn't he upholster? couldn't we upholster? couldn't you upholster? couldn't they upholster?	couldn't I be upholstering? couldn't you be upholstering? couldn't he be upholstering? couldn't we be upholstering? couldn't you be upholstering? couldn't they be upholstering?
Perfect	V-ing perfect
couldn't I have upholstered? couldn't you have upholstered? couldn't he have upholstered? couldn't we have upholstered? couldn't you have upholstered? couldn't they have upholstered?	couldn't I have been upholstering? couldn't you have been upholstering? couldn't he have been upholstering? couldn't we have been upholstering? couldn't you have been upholstering? couldn't they have been upholstering?