English verb conjugation MUST STIFLE

Regular verb: stifle - stifled - stifled

Affirmation

Simple form

I must stifle
you must stifle
she must stifle
we must stifle
you must stifle
they must stifle

V-ing form

I must be stifling
you must be stifling
she must be stifling
we must be stifling
you must be stifling
they must be stifling

Perfect

I must have stifled
you must have stifled
she must have stifled
we must have stifled
you must have stifled
they must have stifled

V-ing perfect

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

Negation

Simple form

I must not stifle
you must not stifle
she must not stifle
we must not stifle
you must not stifle
they must not stifle

V-ing form

I must not be stifling
you must not be stifling
she must not be stifling
we must not be stifling
you must not be stifling
they must not be stifling

Perfect

I must not have stifled
you must not have stifled
she must not have stifled
we must not have stifled
you must not have stifled
they must not have stifled

V-ing perfect

I must not have been stifling
you must not have been stifling
she must not have been stifling
we must not have been stifling
you must not have been stifling
they must not have been stifling

Interrogative form

Simple form

must I stifle?
must you stifle?
must she stifle?
must we stifle?
must you stifle?
must they stifle?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not stifle?
must you not stifle?
must she not stifle?
must we not stifle?
must you not stifle?
must they not stifle?

V-ing form

must I not be stifling?
must you not be stifling?
must she not be stifling?
must we not be stifling?
must you not be stifling?
must they not be stifling?

Perfect

must I not have stifled?
must you not have stifled?
must she not have stifled?
must we not have stifled?
must you not have stifled?
must they not have stifled?

V-ing perfect

must I not have been stifling?
must you not have been stifling?
must she not have been stifling?
must we not have been stifling?
must you not have been stifling?
must they not have been stifling?

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