English verb conjugation MUST PERFUSE

Regular verb: perfuse - perfused - perfused

Affirmation

Simple form

I must perfuse
you must perfuse
he must perfuse
we must perfuse
you must perfuse
they must perfuse

V-ing form

I must be perfusing
you must be perfusing
he must be perfusing
we must be perfusing
you must be perfusing
they must be perfusing

Perfect

I must have perfused
you must have perfused
he must have perfused
we must have perfused
you must have perfused
they must have perfused

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I perfuse?
must you perfuse?
must he perfuse?
must we perfuse?
must you perfuse?
must they perfuse?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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