English verb conjugation
COULD DOUBLE-STOP

Regular verb: double-stop - double-stoped - double-stoped

Affirmation

Simple form	V-ing form
I could double-stop you could double-stop he could double-stop we could double-stop you could double-stop they could double-stop	I could be double-stoping you could be double-stoping he could be double-stoping we could be double-stoping you could be double-stoping they could be double-stoping
Perfect	V-ing perfect
I could have double-stoped you could have double-stoped he could have double-stoped we could have double-stoped you could have double-stoped they could have double-stoped	I could have been double-stoping you could have been double-stoping he could have been double-stoping we could have been double-stoping you could have been double-stoping they could have been double-stoping

Negation

Simple form	V-ing form
I couldn't double-stop you couldn't double-stop he couldn't double-stop we couldn't double-stop you couldn't double-stop they couldn't double-stop	I couldn't be double-stoping you couldn't be double-stoping he couldn't be double-stoping we couldn't be double-stoping you couldn't be double-stoping they couldn't be double-stoping
Perfect	V-ing perfect
I couldn't have double-stoped you couldn't have double-stoped he couldn't have double-stoped we couldn't have double-stoped you couldn't have double-stoped they couldn't have double-stoped	I couldn't have been double-stoping you couldn't have been double-stoping he couldn't have been double-stoping we couldn't have been double-stoping you couldn't have been double-stoping they couldn't have been double-stoping

Interrogative form

Simple form	V-ing form
could I double-stop? could you double-stop? could he double-stop? could we double-stop? could you double-stop? could they double-stop?	could I be double-stoping? could you be double-stoping? could he be double-stoping? could we be double-stoping? could you be double-stoping? could they be double-stoping?
Perfect	V-ing perfect
could I have double-stoped? could you have double-stoped? could he have double-stoped? could we have double-stoped? could you have double-stoped? could they have double-stoped?	could I have been double-stoping? could you have been double-stoping? could he have been double-stoping? could we have been double-stoping? could you have been double-stoping? could they have been double-stoping?

Interro-negative form

Simple form	V-ing form
couldn't I double-stop? couldn't you double-stop? couldn't he double-stop? couldn't we double-stop? couldn't you double-stop? couldn't they double-stop?	couldn't I be double-stoping? couldn't you be double-stoping? couldn't he be double-stoping? couldn't we be double-stoping? couldn't you be double-stoping? couldn't they be double-stoping?
Perfect	V-ing perfect
couldn't I have double-stoped? couldn't you have double-stoped? couldn't he have double-stoped? couldn't we have double-stoped? couldn't you have double-stoped? couldn't they have double-stoped?	couldn't I have been double-stoping? couldn't you have been double-stoping? couldn't he have been double-stoping? couldn't we have been double-stoping? couldn't you have been double-stoping? couldn't they have been double-stoping?