English verb conjugation
MUST FESTOON

Regular verb: festoon - festooned - festooned

Affirmation

Simple form	V-ing form
I must festoon you must festoon he must festoon we must festoon you must festoon they must festoon	I must be festooning you must be festooning he must be festooning we must be festooning you must be festooning they must be festooning
Perfect	V-ing perfect
I must have festooned you must have festooned he must have festooned we must have festooned you must have festooned they must have festooned	I must have been festooning you must have been festooning he must have been festooning we must have been festooning you must have been festooning they must have been festooning

Negation

Simple form	V-ing form
I must not festoon you must not festoon he must not festoon we must not festoon you must not festoon they must not festoon	I must not be festooning you must not be festooning he must not be festooning we must not be festooning you must not be festooning they must not be festooning
Perfect	V-ing perfect
I must not have festooned you must not have festooned he must not have festooned we must not have festooned you must not have festooned they must not have festooned	I must not have been festooning you must not have been festooning he must not have been festooning we must not have been festooning you must not have been festooning they must not have been festooning

Interrogative form

Simple form	V-ing form
must I festoon? must you festoon? must he festoon? must we festoon? must you festoon? must they festoon?	must I be festooning? must you be festooning? must he be festooning? must we be festooning? must you be festooning? must they be festooning?
Perfect	V-ing perfect
must I have festooned? must you have festooned? must he have festooned? must we have festooned? must you have festooned? must they have festooned?	must I have been festooning? must you have been festooning? must he have been festooning? must we have been festooning? must you have been festooning? must they have been festooning?

Interro-negative form

Simple form	V-ing form
must I not festoon? must you not festoon? must he not festoon? must we not festoon? must you not festoon? must they not festoon?	must I not be festooning? must you not be festooning? must he not be festooning? must we not be festooning? must you not be festooning? must they not be festooning?
Perfect	V-ing perfect
must I not have festooned? must you not have festooned? must he not have festooned? must we not have festooned? must you not have festooned? must they not have festooned?	must I not have been festooning? must you not have been festooning? must he not have been festooning? must we not have been festooning? must you not have been festooning? must they not have been festooning?