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 must not engineer
you must not engineer
he must not engineer
we must not engineer
you must not engineer
they must not engineer

V-ing form

I must not be engineering
you must not be engineering
he must not be engineering
we must not be engineering
you must not be engineering
they must not be engineering

Perfect

I must not have engineered
you must not have engineered
he must not have engineered
we must not have engineered
you must not have engineered
they must not have engineered

V-ing perfect

I must not have been engineering
you must not have been engineering
he must not have been engineering
we must not have been engineering
you must not have been engineering
they must not 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

must I not engineer?
must you not engineer?
must he not engineer?
must we not engineer?
must you not engineer?
must they not engineer?

V-ing form

must I not be engineering?
must you not be engineering?
must he not be engineering?
must we not be engineering?
must you not be engineering?
must they not be engineering?

Perfect

must I not have engineered?
must you not have engineered?
must he not have engineered?
must we not have engineered?
must you not have engineered?
must they not have engineered?

V-ing perfect

must I not have been engineering?
must you not have been engineering?
must he not have been engineering?
must we not have been engineering?
must you not have been engineering?
must they not have been engineering?

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