English verb conjugation COULD DUN

Regular verb: dun - dunned - dunned

Affirmation

Simple form

I could dun
you could dun
he could dun
we could dun
you could dun
they could dun

V-ing form

I could be dunning
you could be dunning
he could be dunning
we could be dunning
you could be dunning
they could be dunning

Perfect

I could have dunned
you could have dunned
he 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
he could have been dunning
we could have been dunning
you could have been dunning
they could have been dunning

Negation

Simple form

I couldn't dun
you couldn't dun
he couldn't dun
we couldn't dun
you couldn't dun
they couldn't dun

V-ing form

I couldn't be dunning
you couldn't be dunning
he couldn't be dunning
we couldn't be dunning
you couldn't be dunning
they couldn't be dunning

Perfect

I couldn't have dunned
you couldn't have dunned
he couldn't have dunned
we couldn't have dunned
you couldn't have dunned
they couldn't have dunned

V-ing perfect

I couldn't have been dunning
you couldn't have been dunning
he couldn't have been dunning
we couldn't have been dunning
you couldn't have been dunning
they couldn't have been dunning

Interrogative form

Simple form

could I dun?
could you dun?
could he dun?
could we dun?
could you dun?
could they dun?

V-ing form

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

Perfect

could I have dunned?
could you have dunned?
could he 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 he have been dunning?
could we have been dunning?
could you have been dunning?
could they have been dunning?

Interro-negative form

Simple form

couldn't I dun?
couldn't you dun?
couldn't he dun?
couldn't we dun?
couldn't you dun?
couldn't they dun?

V-ing form

couldn't I be dunning?
couldn't you be dunning?
couldn't he be dunning?
couldn't we be dunning?
couldn't you be dunning?
couldn't they be dunning?

Perfect

couldn't I have dunned?
couldn't you have dunned?
couldn't he have dunned?
couldn't we have dunned?
couldn't you have dunned?
couldn't they have dunned?

V-ing perfect

couldn't I have been dunning?
couldn't you have been dunning?
couldn't he have been dunning?
couldn't we have been dunning?
couldn't you have been dunning?
couldn't they have been dunning?

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