English verb conjugation COULD DUN

Regular verb: dun - dunned - dunned

Affirmation

Simple form

I could dun
you could dun
she could dun
we could dun
you could dun
they could dun

V-ing form

I could be dunning
you could be dunning
she could be dunning
we could be dunning
you could be dunning
they could be dunning

Perfect

I could have dunned
you could have dunned
she could have dunned
we could have dunned
you could have dunned
they could have dunned

V-ing perfect

I could have been dunning
you could have been dunning
she could have been dunning
we could have been dunning
you could have been dunning
they could have been dunning

Negation

Simple form

I could not dun
you could not dun
she could not dun
we could not dun
you could not dun
they could not dun

V-ing form

I could not be dunning
you could not be dunning
she could not be dunning
we could not be dunning
you could not be dunning
they could not be dunning

Perfect

I could not have dunned
you could not have dunned
she could not have dunned
we could not have dunned
you could not have dunned
they could not have dunned

V-ing perfect

I could not have been dunning
you could not have been dunning
she could not have been dunning
we could not have been dunning
you could not have been dunning
they could not have been dunning

Interrogative form

Simple form

could I dun?
could you dun?
could she dun?
could we dun?
could you dun?
could they dun?

V-ing form

could I be dunning?
could you be dunning?
could she be dunning?
could we be dunning?
could you be dunning?
could they be dunning?

Perfect

could I have dunned?
could you have dunned?
could she have dunned?
could we have dunned?
could you have dunned?
could they have dunned?

V-ing perfect

could I have been dunning?
could you have been dunning?
could she have been dunning?
could we have been dunning?
could you have been dunning?
could they have been dunning?

Interro-negative form

Simple form

could I not dun?
could you not dun?
could she not dun?
could we not dun?
could you not dun?
could they not dun?

V-ing form

could I not be dunning?
could you not be dunning?
could she not be dunning?
could we not be dunning?
could you not be dunning?
could they not be dunning?

Perfect

could I not have dunned?
could you not have dunned?
could she not have dunned?
could we not have dunned?
could you not have dunned?
could they not have dunned?

V-ing perfect

could I not have been dunning?
could you not have been dunning?
could she not have been dunning?
could we not have been dunning?
could you not have been dunning?
could they not have been dunning?

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