English verb conjugation MUST EXCUSE

Regular verb: excuse - excused - excused

Affirmation

Simple form

I must excuse
you must excuse
he must excuse
we must excuse
you must excuse
they must excuse

V-ing form

I must be excusing
you must be excusing
he must be excusing
we must be excusing
you must be excusing
they must be excusing

Perfect

I must have excused
you must have excused
he must have excused
we must have excused
you must have excused
they must have excused

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I excuse?
must you excuse?
must he excuse?
must we excuse?
must you excuse?
must they excuse?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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