English verb conjugation
COULD COCOON

Regular verb: cocoon - cocooned - cocooned

Affirmation

Simple form	V-ing form
I could cocoon you could cocoon he could cocoon we could cocoon you could cocoon they could cocoon	I could be cocooning you could be cocooning he could be cocooning we could be cocooning you could be cocooning they could be cocooning
Perfect	V-ing perfect
I could have cocooned you could have cocooned he could have cocooned we could have cocooned you could have cocooned they could have cocooned	I could have been cocooning you could have been cocooning he could have been cocooning we could have been cocooning you could have been cocooning they could have been cocooning

Negation

Simple form	V-ing form
I couldn't cocoon you couldn't cocoon he couldn't cocoon we couldn't cocoon you couldn't cocoon they couldn't cocoon	I couldn't be cocooning you couldn't be cocooning he couldn't be cocooning we couldn't be cocooning you couldn't be cocooning they couldn't be cocooning
Perfect	V-ing perfect
I couldn't have cocooned you couldn't have cocooned he couldn't have cocooned we couldn't have cocooned you couldn't have cocooned they couldn't have cocooned	I couldn't have been cocooning you couldn't have been cocooning he couldn't have been cocooning we couldn't have been cocooning you couldn't have been cocooning they couldn't have been cocooning

Interrogative form

Simple form	V-ing form
could I cocoon? could you cocoon? could he cocoon? could we cocoon? could you cocoon? could they cocoon?	could I be cocooning? could you be cocooning? could he be cocooning? could we be cocooning? could you be cocooning? could they be cocooning?
Perfect	V-ing perfect
could I have cocooned? could you have cocooned? could he have cocooned? could we have cocooned? could you have cocooned? could they have cocooned?	could I have been cocooning? could you have been cocooning? could he have been cocooning? could we have been cocooning? could you have been cocooning? could they have been cocooning?

Interro-negative form

Simple form	V-ing form
couldn't I cocoon? couldn't you cocoon? couldn't he cocoon? couldn't we cocoon? couldn't you cocoon? couldn't they cocoon?	couldn't I be cocooning? couldn't you be cocooning? couldn't he be cocooning? couldn't we be cocooning? couldn't you be cocooning? couldn't they be cocooning?
Perfect	V-ing perfect
couldn't I have cocooned? couldn't you have cocooned? couldn't he have cocooned? couldn't we have cocooned? couldn't you have cocooned? couldn't they have cocooned?	couldn't I have been cocooning? couldn't you have been cocooning? couldn't he have been cocooning? couldn't we have been cocooning? couldn't you have been cocooning? couldn't they have been cocooning?