English verb conjugation COULD IMPUGN

Regular verb: impugn - impugned - impugned

Affirmation

Simple form

I could impugn
you could impugn
she could impugn
we could impugn
you could impugn
they could impugn

V-ing form

I could be impugning
you could be impugning
she could be impugning
we could be impugning
you could be impugning
they could be impugning

Perfect

I could have impugned
you could have impugned
she could have impugned
we could have impugned
you could have impugned
they could have impugned

V-ing perfect

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

Negation

Simple form

I could not impugn
you could not impugn
she could not impugn
we could not impugn
you could not impugn
they could not impugn

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I impugn?
could you impugn?
could she impugn?
could we impugn?
could you impugn?
could they impugn?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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