English verb conjugation MUST CREASE

Regular verb: crease - creased - creased

Affirmation

Simple form

I must crease
you must crease
he must crease
we must crease
you must crease
they must crease

V-ing form

I must be creasing
you must be creasing
he must be creasing
we must be creasing
you must be creasing
they must be creasing

Perfect

I must have creased
you must have creased
he must have creased
we must have creased
you must have creased
they must have creased

V-ing perfect

I must have been creasing
you must have been creasing
he must have been creasing
we must have been creasing
you must have been creasing
they must have been creasing

Negation

Simple form

I must not crease
you must not crease
he must not crease
we must not crease
you must not crease
they must not crease

V-ing form

I must not be creasing
you must not be creasing
he must not be creasing
we must not be creasing
you must not be creasing
they must not be creasing

Perfect

I must not have creased
you must not have creased
he must not have creased
we must not have creased
you must not have creased
they must not have creased

V-ing perfect

I must not have been creasing
you must not have been creasing
he must not have been creasing
we must not have been creasing
you must not have been creasing
they must not have been creasing

Interrogative form

Simple form

must I crease?
must you crease?
must he crease?
must we crease?
must you crease?
must they crease?

V-ing form

must I be creasing?
must you be creasing?
must he be creasing?
must we be creasing?
must you be creasing?
must they be creasing?

Perfect

must I have creased?
must you have creased?
must he have creased?
must we have creased?
must you have creased?
must they have creased?

V-ing perfect

must I have been creasing?
must you have been creasing?
must he have been creasing?
must we have been creasing?
must you have been creasing?
must they have been creasing?

Interro-negative form

Simple form

must I not crease?
must you not crease?
must he not crease?
must we not crease?
must you not crease?
must they not crease?

V-ing form

must I not be creasing?
must you not be creasing?
must he not be creasing?
must we not be creasing?
must you not be creasing?
must they not be creasing?

Perfect

must I not have creased?
must you not have creased?
must he not have creased?
must we not have creased?
must you not have creased?
must they not have creased?

V-ing perfect

must I not have been creasing?
must you not have been creasing?
must he not have been creasing?
must we not have been creasing?
must you not have been creasing?
must they not have been creasing?

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