English verb conjugation MUST FILE

Regular verb: file - filed - filed

Affirmation

Simple form

I must file
you must file
he must file
we must file
you must file
they must file

V-ing form

I must be filing
you must be filing
he must be filing
we must be filing
you must be filing
they must be filing

Perfect

I must have filed
you must have filed
he must have filed
we must have filed
you must have filed
they must have filed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I file?
must you file?
must he file?
must we file?
must you file?
must they file?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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