English verb conjugation
COULD BOOST

Regular verb: boost - boosted - boosted

Affirmation

Simple form	V-ing form
I could boost you could boost she could boost we could boost you could boost they could boost	I could be boosting you could be boosting she could be boosting we could be boosting you could be boosting they could be boosting
Perfect	V-ing perfect
I could have boosted you could have boosted she could have boosted we could have boosted you could have boosted they could have boosted	I could have been boosting you could have been boosting she could have been boosting we could have been boosting you could have been boosting they could have been boosting

Negation

Simple form	V-ing form
I couldn't boost you couldn't boost she couldn't boost we couldn't boost you couldn't boost they couldn't boost	I couldn't be boosting you couldn't be boosting she couldn't be boosting we couldn't be boosting you couldn't be boosting they couldn't be boosting
Perfect	V-ing perfect
I couldn't have boosted you couldn't have boosted she couldn't have boosted we couldn't have boosted you couldn't have boosted they couldn't have boosted	I couldn't have been boosting you couldn't have been boosting she couldn't have been boosting we couldn't have been boosting you couldn't have been boosting they couldn't have been boosting

Interrogative form

Simple form	V-ing form
could I boost? could you boost? could she boost? could we boost? could you boost? could they boost?	could I be boosting? could you be boosting? could she be boosting? could we be boosting? could you be boosting? could they be boosting?
Perfect	V-ing perfect
could I have boosted? could you have boosted? could she have boosted? could we have boosted? could you have boosted? could they have boosted?	could I have been boosting? could you have been boosting? could she have been boosting? could we have been boosting? could you have been boosting? could they have been boosting?

Interro-negative form

Simple form	V-ing form
couldn't I boost? couldn't you boost? couldn't she boost? couldn't we boost? couldn't you boost? couldn't they boost?	couldn't I be boosting? couldn't you be boosting? couldn't she be boosting? couldn't we be boosting? couldn't you be boosting? couldn't they be boosting?
Perfect	V-ing perfect
couldn't I have boosted? couldn't you have boosted? couldn't she have boosted? couldn't we have boosted? couldn't you have boosted? couldn't they have boosted?	couldn't I have been boosting? couldn't you have been boosting? couldn't she have been boosting? couldn't we have been boosting? couldn't you have been boosting? couldn't they have been boosting?