English verb conjugation MUST GROUSE

Regular verb: grouse - groused - groused

Affirmation

Simple form

I must grouse
you must grouse
he must grouse
we must grouse
you must grouse
they must grouse

V-ing form

I must be grousing
you must be grousing
he must be grousing
we must be grousing
you must be grousing
they must be grousing

Perfect

I must have groused
you must have groused
he must have groused
we must have groused
you must have groused
they must have groused

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I grouse?
must you grouse?
must he grouse?
must we grouse?
must you grouse?
must they grouse?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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