English verb conjugation MUST INTERFUSE

Regular verb: interfuse - interfused - interfused

Affirmation

Simple form

I must interfuse
you must interfuse
he must interfuse
we must interfuse
you must interfuse
they must interfuse

V-ing form

I must be interfusing
you must be interfusing
he must be interfusing
we must be interfusing
you must be interfusing
they must be interfusing

Perfect

I must have interfused
you must have interfused
he must have interfused
we must have interfused
you must have interfused
they must have interfused

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I interfuse?
must you interfuse?
must he interfuse?
must we interfuse?
must you interfuse?
must they interfuse?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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