English verb conjugation MUST LAUGHTER

Regular verb: laughter - laughtered - laughtered

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form

I must laughter
you must laughter
she must laughter
we must laughter
you must laughter
they must laughter

V-ing form

I must be laughtering
you must be laughtering
she must be laughtering
we must be laughtering
you must be laughtering
they must be laughtering

Perfect

I must have laughtered
you must have laughtered
she must have laughtered
we must have laughtered
you must have laughtered
they must have laughtered

V-ing perfect

I must have been laughtering
you must have been laughtering
she must have been laughtering
we must have been laughtering
you must have been laughtering
they must have been laughtering

Negation

Simple form

I mustn't laughter
you mustn't laughter
she mustn't laughter
we mustn't laughter
you mustn't laughter
they mustn't laughter

V-ing form

I mustn't be laughtering
you mustn't be laughtering
she mustn't be laughtering
we mustn't be laughtering
you mustn't be laughtering
they mustn't be laughtering

Perfect

I mustn't have laughtered
you mustn't have laughtered
she mustn't have laughtered
we mustn't have laughtered
you mustn't have laughtered
they mustn't have laughtered

V-ing perfect

I mustn't have been laughtering
you mustn't have been laughtering
she mustn't have been laughtering
we mustn't have been laughtering
you mustn't have been laughtering
they mustn't have been laughtering

Interrogative form

Simple form

must I laughter?
must you laughter?
must she laughter?
must we laughter?
must you laughter?
must they laughter?

V-ing form

must I be laughtering?
must you be laughtering?
must she be laughtering?
must we be laughtering?
must you be laughtering?
must they be laughtering?

Perfect

must I have laughtered?
must you have laughtered?
must she have laughtered?
must we have laughtered?
must you have laughtered?
must they have laughtered?

V-ing perfect

must I have been laughtering?
must you have been laughtering?
must she have been laughtering?
must we have been laughtering?
must you have been laughtering?
must they have been laughtering?

Interro-negative form

Simple form

mustn't I laughter?
mustn't you laughter?
mustn't she laughter?
mustn't we laughter?
mustn't you laughter?
mustn't they laughter?

V-ing form

mustn't I be laughtering?
mustn't you be laughtering?
mustn't she be laughtering?
mustn't we be laughtering?
mustn't you be laughtering?
mustn't they be laughtering?

Perfect

mustn't I have laughtered?
mustn't you have laughtered?
mustn't she have laughtered?
mustn't we have laughtered?
mustn't you have laughtered?
mustn't they have laughtered?

V-ing perfect

mustn't I have been laughtering?
mustn't you have been laughtering?
mustn't she have been laughtering?
mustn't we have been laughtering?
mustn't you have been laughtering?
mustn't they have been laughtering?

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