English verb conjugation MUST GUFFAW

Regular verb: guffaw - guffawed - guffawed

Affirmation

Simple form

I must guffaw
you must guffaw
he must guffaw
we must guffaw
you must guffaw
they must guffaw

V-ing form

I must be guffawing
you must be guffawing
he must be guffawing
we must be guffawing
you must be guffawing
they must be guffawing

Perfect

I must have guffawed
you must have guffawed
he must have guffawed
we must have guffawed
you must have guffawed
they must have guffawed

V-ing perfect

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

Negation

Simple form

I mustn't guffaw
you mustn't guffaw
he mustn't guffaw
we mustn't guffaw
you mustn't guffaw
they mustn't guffaw

V-ing form

I mustn't be guffawing
you mustn't be guffawing
he mustn't be guffawing
we mustn't be guffawing
you mustn't be guffawing
they mustn't be guffawing

Perfect

I mustn't have guffawed
you mustn't have guffawed
he mustn't have guffawed
we mustn't have guffawed
you mustn't have guffawed
they mustn't have guffawed

V-ing perfect

I mustn't have been guffawing
you mustn't have been guffawing
he mustn't have been guffawing
we mustn't have been guffawing
you mustn't have been guffawing
they mustn't have been guffawing

Interrogative form

Simple form

must I guffaw?
must you guffaw?
must he guffaw?
must we guffaw?
must you guffaw?
must they guffaw?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I guffaw?
mustn't you guffaw?
mustn't he guffaw?
mustn't we guffaw?
mustn't you guffaw?
mustn't they guffaw?

V-ing form

mustn't I be guffawing?
mustn't you be guffawing?
mustn't he be guffawing?
mustn't we be guffawing?
mustn't you be guffawing?
mustn't they be guffawing?

Perfect

mustn't I have guffawed?
mustn't you have guffawed?
mustn't he have guffawed?
mustn't we have guffawed?
mustn't you have guffawed?
mustn't they have guffawed?

V-ing perfect

mustn't I have been guffawing?
mustn't you have been guffawing?
mustn't he have been guffawing?
mustn't we have been guffawing?
mustn't you have been guffawing?
mustn't they have been guffawing?

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