English verb conjugation
COULD DOUBLE-SPACE

Regular verb: double-space - double-spaced - double-spaced

Affirmation

Simple form	V-ing form
I could double-space you could double-space he could double-space we could double-space you could double-space they could double-space	I could be double-spacing you could be double-spacing he could be double-spacing we could be double-spacing you could be double-spacing they could be double-spacing
Perfect	V-ing perfect
I could have double-spaced you could have double-spaced he could have double-spaced we could have double-spaced you could have double-spaced they could have double-spaced	I could have been double-spacing you could have been double-spacing he could have been double-spacing we could have been double-spacing you could have been double-spacing they could have been double-spacing

Negation

Simple form	V-ing form
I couldn't double-space you couldn't double-space he couldn't double-space we couldn't double-space you couldn't double-space they couldn't double-space	I couldn't be double-spacing you couldn't be double-spacing he couldn't be double-spacing we couldn't be double-spacing you couldn't be double-spacing they couldn't be double-spacing
Perfect	V-ing perfect
I couldn't have double-spaced you couldn't have double-spaced he couldn't have double-spaced we couldn't have double-spaced you couldn't have double-spaced they couldn't have double-spaced	I couldn't have been double-spacing you couldn't have been double-spacing he couldn't have been double-spacing we couldn't have been double-spacing you couldn't have been double-spacing they couldn't have been double-spacing

Interrogative form

Simple form	V-ing form
could I double-space? could you double-space? could he double-space? could we double-space? could you double-space? could they double-space?	could I be double-spacing? could you be double-spacing? could he be double-spacing? could we be double-spacing? could you be double-spacing? could they be double-spacing?
Perfect	V-ing perfect
could I have double-spaced? could you have double-spaced? could he have double-spaced? could we have double-spaced? could you have double-spaced? could they have double-spaced?	could I have been double-spacing? could you have been double-spacing? could he have been double-spacing? could we have been double-spacing? could you have been double-spacing? could they have been double-spacing?

Interro-negative form

Simple form	V-ing form
couldn't I double-space? couldn't you double-space? couldn't he double-space? couldn't we double-space? couldn't you double-space? couldn't they double-space?	couldn't I be double-spacing? couldn't you be double-spacing? couldn't he be double-spacing? couldn't we be double-spacing? couldn't you be double-spacing? couldn't they be double-spacing?
Perfect	V-ing perfect
couldn't I have double-spaced? couldn't you have double-spaced? couldn't he have double-spaced? couldn't we have double-spaced? couldn't you have double-spaced? couldn't they have double-spaced?	couldn't I have been double-spacing? couldn't you have been double-spacing? couldn't he have been double-spacing? couldn't we have been double-spacing? couldn't you have been double-spacing? couldn't they have been double-spacing?