English verb conjugation MUST DUN

Regular verb: dun - dunned - dunned

Affirmation

Simple form

I must dun
you must dun
he must dun
we must dun
you must dun
they must dun

V-ing form

I must be dunning
you must be dunning
he must be dunning
we must be dunning
you must be dunning
they must be dunning

Perfect

I must have dunned
you must have dunned
he must have dunned
we must have dunned
you must have dunned
they must have dunned

V-ing perfect

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

Negation

Simple form

I must not dun
you must not dun
he must not dun
we must not dun
you must not dun
they must not dun

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I dun?
must you dun?
must he dun?
must we dun?
must you dun?
must they dun?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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