English verb conjugation
COULD DEPRESSURIZE

Regular verb: depressurize - depressurized - depressurized

Affirmation

Simple form	V-ing form
I could depressurize you could depressurize she could depressurize we could depressurize you could depressurize they could depressurize	I could be depressurizing you could be depressurizing she could be depressurizing we could be depressurizing you could be depressurizing they could be depressurizing
Perfect	V-ing perfect
I could have depressurized you could have depressurized she could have depressurized we could have depressurized you could have depressurized they could have depressurized	I could have been depressurizing you could have been depressurizing she could have been depressurizing we could have been depressurizing you could have been depressurizing they could have been depressurizing

Negation

Simple form	V-ing form
I couldn't depressurize you couldn't depressurize she couldn't depressurize we couldn't depressurize you couldn't depressurize they couldn't depressurize	I couldn't be depressurizing you couldn't be depressurizing she couldn't be depressurizing we couldn't be depressurizing you couldn't be depressurizing they couldn't be depressurizing
Perfect	V-ing perfect
I couldn't have depressurized you couldn't have depressurized she couldn't have depressurized we couldn't have depressurized you couldn't have depressurized they couldn't have depressurized	I couldn't have been depressurizing you couldn't have been depressurizing she couldn't have been depressurizing we couldn't have been depressurizing you couldn't have been depressurizing they couldn't have been depressurizing

Interrogative form

Simple form	V-ing form
could I depressurize? could you depressurize? could she depressurize? could we depressurize? could you depressurize? could they depressurize?	could I be depressurizing? could you be depressurizing? could she be depressurizing? could we be depressurizing? could you be depressurizing? could they be depressurizing?
Perfect	V-ing perfect
could I have depressurized? could you have depressurized? could she have depressurized? could we have depressurized? could you have depressurized? could they have depressurized?	could I have been depressurizing? could you have been depressurizing? could she have been depressurizing? could we have been depressurizing? could you have been depressurizing? could they have been depressurizing?

Interro-negative form

Simple form	V-ing form
couldn't I depressurize? couldn't you depressurize? couldn't she depressurize? couldn't we depressurize? couldn't you depressurize? couldn't they depressurize?	couldn't I be depressurizing? couldn't you be depressurizing? couldn't she be depressurizing? couldn't we be depressurizing? couldn't you be depressurizing? couldn't they be depressurizing?
Perfect	V-ing perfect
couldn't I have depressurized? couldn't you have depressurized? couldn't she have depressurized? couldn't we have depressurized? couldn't you have depressurized? couldn't they have depressurized?	couldn't I have been depressurizing? couldn't you have been depressurizing? couldn't she have been depressurizing? couldn't we have been depressurizing? couldn't you have been depressurizing? couldn't they have been depressurizing?