English verb conjugation CAN IMPUGN

Regular verb: impugn - impugned - impugned

Affirmation

Simple form

I can impugn
you can impugn
he can impugn
we can impugn
you can impugn
they can impugn

V-ing form

I can be impugning
you can be impugning
he can be impugning
we can be impugning
you can be impugning
they can be impugning

Perfect

I can have impugned
you can have impugned
he can have impugned
we can have impugned
you can have impugned
they can have impugned

V-ing perfect

I can have been impugning
you can have been impugning
he can have been impugning
we can have been impugning
you can have been impugning
they can have been impugning

Negation

Simple form

I can't impugn
you can't impugn
he can't impugn
we can't impugn
you can't impugn
they can't impugn

V-ing form

I can't be impugning
you can't be impugning
he can't be impugning
we can't be impugning
you can't be impugning
they can't be impugning

Perfect

I can't have impugned
you can't have impugned
he can't have impugned
we can't have impugned
you can't have impugned
they can't have impugned

V-ing perfect

I can't have been impugning
you can't have been impugning
he can't have been impugning
we can't have been impugning
you can't have been impugning
they can't have been impugning

Interrogative form

Simple form

can I impugn?
can you impugn?
can he impugn?
can we impugn?
can you impugn?
can they impugn?

V-ing form

can I be impugning?
can you be impugning?
can he be impugning?
can we be impugning?
can you be impugning?
can they be impugning?

Perfect

can I have impugned?
can you have impugned?
can he have impugned?
can we have impugned?
can you have impugned?
can they have impugned?

V-ing perfect

can I have been impugning?
can you have been impugning?
can he have been impugning?
can we have been impugning?
can you have been impugning?
can they have been impugning?

Interro-negative form

Simple form

can't I impugn?
can't you impugn?
can't he impugn?
can't we impugn?
can't you impugn?
can't they impugn?

V-ing form

can't I be impugning?
can't you be impugning?
can't he be impugning?
can't we be impugning?
can't you be impugning?
can't they be impugning?

Perfect

can't I have impugned?
can't you have impugned?
can't he have impugned?
can't we have impugned?
can't you have impugned?
can't they have impugned?

V-ing perfect

can't I have been impugning?
can't you have been impugning?
can't he have been impugning?
can't we have been impugning?
can't you have been impugning?
can't they have been impugning?

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