English verb conjugation MUST INTERFUSE

Regular verb: interfuse - interfused - interfused

Affirmation

Simple form

I must interfuse
you must interfuse
she must interfuse
we must interfuse
you must interfuse
they must interfuse

V-ing form

I must be interfusing
you must be interfusing
she must be interfusing
we must be interfusing
you must be interfusing
they must be interfusing

Perfect

I must have interfused
you must have interfused
she 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
she 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
she 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
she 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
she 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
she 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 she interfuse?
must we interfuse?
must you interfuse?
must they interfuse?

V-ing form

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

Perfect

must I have interfused?
must you have interfused?
must she 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 she 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 she 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 she 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 she 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 she 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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