English verb conjugation
MUST COCOON

Regular verb: cocoon - cocooned - cocooned

Affirmation

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

Negation

Simple form	V-ing form
I must not cocoon you must not cocoon she must not cocoon we must not cocoon you must not cocoon they must not cocoon	I must not be cocooning you must not be cocooning she must not be cocooning we must not be cocooning you must not be cocooning they must not be cocooning
Perfect	V-ing perfect
I must not have cocooned you must not have cocooned she must not have cocooned we must not have cocooned you must not have cocooned they must not have cocooned	I must not have been cocooning you must not have been cocooning she must not have been cocooning we must not have been cocooning you must not have been cocooning they must not have been cocooning

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not cocoon? must you not cocoon? must she not cocoon? must we not cocoon? must you not cocoon? must they not cocoon?	must I not be cocooning? must you not be cocooning? must she not be cocooning? must we not be cocooning? must you not be cocooning? must they not be cocooning?
Perfect	V-ing perfect
must I not have cocooned? must you not have cocooned? must she not have cocooned? must we not have cocooned? must you not have cocooned? must they not have cocooned?	must I not have been cocooning? must you not have been cocooning? must she not have been cocooning? must we not have been cocooning? must you not have been cocooning? must they not have been cocooning?