English verb conjugation MUST ENGINEER

Regular verb: engineer - engineered - engineered

Affirmation

Simple form

I must engineer
you must engineer
he must engineer
we must engineer
you must engineer
they must engineer

V-ing form

I must be engineering
you must be engineering
he must be engineering
we must be engineering
you must be engineering
they must be engineering

Perfect

I must have engineered
you must have engineered
he must have engineered
we must have engineered
you must have engineered
they must have engineered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I engineer?
must you engineer?
must he engineer?
must we engineer?
must you engineer?
must they engineer?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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