English verb conjugation MUST PERTAIN

Regular verb: pertain - pertained - pertained

Affirmation

Simple form

I must pertain
you must pertain
he must pertain
we must pertain
you must pertain
they must pertain

V-ing form

I must be pertaining
you must be pertaining
he must be pertaining
we must be pertaining
you must be pertaining
they must be pertaining

Perfect

I must have pertained
you must have pertained
he must have pertained
we must have pertained
you must have pertained
they must have pertained

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I pertain?
must you pertain?
must he pertain?
must we pertain?
must you pertain?
must they pertain?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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