English verb conjugation MUST FUNCTION

Regular verb: function - functioned - functioned

Affirmation

Simple form

I must function
you must function
she must function
we must function
you must function
they must function

V-ing form

I must be functioning
you must be functioning
she must be functioning
we must be functioning
you must be functioning
they must be functioning

Perfect

I must have functioned
you must have functioned
she must have functioned
we must have functioned
you must have functioned
they must have functioned

V-ing perfect

I must have been functioning
you must have been functioning
she must have been functioning
we must have been functioning
you must have been functioning
they must have been functioning

Negation

Simple form

I mustn't function
you mustn't function
she mustn't function
we mustn't function
you mustn't function
they mustn't function

V-ing form

I mustn't be functioning
you mustn't be functioning
she mustn't be functioning
we mustn't be functioning
you mustn't be functioning
they mustn't be functioning

Perfect

I mustn't have functioned
you mustn't have functioned
she mustn't have functioned
we mustn't have functioned
you mustn't have functioned
they mustn't have functioned

V-ing perfect

I mustn't have been functioning
you mustn't have been functioning
she mustn't have been functioning
we mustn't have been functioning
you mustn't have been functioning
they mustn't have been functioning

Interrogative form

Simple form

must I function?
must you function?
must she function?
must we function?
must you function?
must they function?

V-ing form

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

Perfect

must I have functioned?
must you have functioned?
must she have functioned?
must we have functioned?
must you have functioned?
must they have functioned?

V-ing perfect

must I have been functioning?
must you have been functioning?
must she have been functioning?
must we have been functioning?
must you have been functioning?
must they have been functioning?

Interro-negative form

Simple form

mustn't I function?
mustn't you function?
mustn't she function?
mustn't we function?
mustn't you function?
mustn't they function?

V-ing form

mustn't I be functioning?
mustn't you be functioning?
mustn't she be functioning?
mustn't we be functioning?
mustn't you be functioning?
mustn't they be functioning?

Perfect

mustn't I have functioned?
mustn't you have functioned?
mustn't she have functioned?
mustn't we have functioned?
mustn't you have functioned?
mustn't they have functioned?

V-ing perfect

mustn't I have been functioning?
mustn't you have been functioning?
mustn't she have been functioning?
mustn't we have been functioning?
mustn't you have been functioning?
mustn't they have been functioning?

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