English verb conjugation MUST PREEXIST

Regular verb: preexist - preexisted - preexisted

Affirmation

Simple form

I must preexist
you must preexist
he must preexist
we must preexist
you must preexist
they must preexist

V-ing form

I must be preexisting
you must be preexisting
he must be preexisting
we must be preexisting
you must be preexisting
they must be preexisting

Perfect

I must have preexisted
you must have preexisted
he must have preexisted
we must have preexisted
you must have preexisted
they must have preexisted

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I preexist?
must you preexist?
must he preexist?
must we preexist?
must you preexist?
must they preexist?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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