English verb conjugation
COULD SLAG

Regular verb: slag - slagged - slagged

Affirmation

Simple form	V-ing form
I could slag you could slag he could slag we could slag you could slag they could slag	I could be slagging you could be slagging he could be slagging we could be slagging you could be slagging they could be slagging
Perfect	V-ing perfect
I could have slagged you could have slagged he could have slagged we could have slagged you could have slagged they could have slagged	I could have been slagging you could have been slagging he could have been slagging we could have been slagging you could have been slagging they could have been slagging

Negation

Simple form	V-ing form
I couldn't slag you couldn't slag he couldn't slag we couldn't slag you couldn't slag they couldn't slag	I couldn't be slagging you couldn't be slagging he couldn't be slagging we couldn't be slagging you couldn't be slagging they couldn't be slagging
Perfect	V-ing perfect
I couldn't have slagged you couldn't have slagged he couldn't have slagged we couldn't have slagged you couldn't have slagged they couldn't have slagged	I couldn't have been slagging you couldn't have been slagging he couldn't have been slagging we couldn't have been slagging you couldn't have been slagging they couldn't have been slagging

Interrogative form

Simple form	V-ing form
could I slag? could you slag? could he slag? could we slag? could you slag? could they slag?	could I be slagging? could you be slagging? could he be slagging? could we be slagging? could you be slagging? could they be slagging?
Perfect	V-ing perfect
could I have slagged? could you have slagged? could he have slagged? could we have slagged? could you have slagged? could they have slagged?	could I have been slagging? could you have been slagging? could he have been slagging? could we have been slagging? could you have been slagging? could they have been slagging?

Interro-negative form

Simple form	V-ing form
couldn't I slag? couldn't you slag? couldn't he slag? couldn't we slag? couldn't you slag? couldn't they slag?	couldn't I be slagging? couldn't you be slagging? couldn't he be slagging? couldn't we be slagging? couldn't you be slagging? couldn't they be slagging?
Perfect	V-ing perfect
couldn't I have slagged? couldn't you have slagged? couldn't he have slagged? couldn't we have slagged? couldn't you have slagged? couldn't they have slagged?	couldn't I have been slagging? couldn't you have been slagging? couldn't he have been slagging? couldn't we have been slagging? couldn't you have been slagging? couldn't they have been slagging?