English verb conjugation
COULD BIRD-DOG

Regular verb: bird-dog - bird-doged - bird-doged

Affirmation

Simple form	V-ing form
I could bird-dog you could bird-dog he could bird-dog we could bird-dog you could bird-dog they could bird-dog	I could be bird-doging you could be bird-doging he could be bird-doging we could be bird-doging you could be bird-doging they could be bird-doging
Perfect	V-ing perfect
I could have bird-doged you could have bird-doged he could have bird-doged we could have bird-doged you could have bird-doged they could have bird-doged	I could have been bird-doging you could have been bird-doging he could have been bird-doging we could have been bird-doging you could have been bird-doging they could have been bird-doging

Negation

Simple form	V-ing form
I couldn't bird-dog you couldn't bird-dog he couldn't bird-dog we couldn't bird-dog you couldn't bird-dog they couldn't bird-dog	I couldn't be bird-doging you couldn't be bird-doging he couldn't be bird-doging we couldn't be bird-doging you couldn't be bird-doging they couldn't be bird-doging
Perfect	V-ing perfect
I couldn't have bird-doged you couldn't have bird-doged he couldn't have bird-doged we couldn't have bird-doged you couldn't have bird-doged they couldn't have bird-doged	I couldn't have been bird-doging you couldn't have been bird-doging he couldn't have been bird-doging we couldn't have been bird-doging you couldn't have been bird-doging they couldn't have been bird-doging

Interrogative form

Simple form	V-ing form
could I bird-dog? could you bird-dog? could he bird-dog? could we bird-dog? could you bird-dog? could they bird-dog?	could I be bird-doging? could you be bird-doging? could he be bird-doging? could we be bird-doging? could you be bird-doging? could they be bird-doging?
Perfect	V-ing perfect
could I have bird-doged? could you have bird-doged? could he have bird-doged? could we have bird-doged? could you have bird-doged? could they have bird-doged?	could I have been bird-doging? could you have been bird-doging? could he have been bird-doging? could we have been bird-doging? could you have been bird-doging? could they have been bird-doging?

Interro-negative form

Simple form	V-ing form
couldn't I bird-dog? couldn't you bird-dog? couldn't he bird-dog? couldn't we bird-dog? couldn't you bird-dog? couldn't they bird-dog?	couldn't I be bird-doging? couldn't you be bird-doging? couldn't he be bird-doging? couldn't we be bird-doging? couldn't you be bird-doging? couldn't they be bird-doging?
Perfect	V-ing perfect
couldn't I have bird-doged? couldn't you have bird-doged? couldn't he have bird-doged? couldn't we have bird-doged? couldn't you have bird-doged? couldn't they have bird-doged?	couldn't I have been bird-doging? couldn't you have been bird-doging? couldn't he have been bird-doging? couldn't we have been bird-doging? couldn't you have been bird-doging? couldn't they have been bird-doging?