English verb conjugation COULD DOFF

Regular verb: doff - doffed - doffed

Affirmation

Simple form

I could doff
you could doff
he could doff
we could doff
you could doff
they could doff

V-ing form

I could be doffing
you could be doffing
he could be doffing
we could be doffing
you could be doffing
they could be doffing

Perfect

I could have doffed
you could have doffed
he could have doffed
we could have doffed
you could have doffed
they could have doffed

V-ing perfect

I could have been doffing
you could have been doffing
he could have been doffing
we could have been doffing
you could have been doffing
they could have been doffing

Negation

Simple form

I could not doff
you could not doff
he could not doff
we could not doff
you could not doff
they could not doff

V-ing form

I could not be doffing
you could not be doffing
he could not be doffing
we could not be doffing
you could not be doffing
they could not be doffing

Perfect

I could not have doffed
you could not have doffed
he could not have doffed
we could not have doffed
you could not have doffed
they could not have doffed

V-ing perfect

I could not have been doffing
you could not have been doffing
he could not have been doffing
we could not have been doffing
you could not have been doffing
they could not have been doffing

Interrogative form

Simple form

could I doff?
could you doff?
could he doff?
could we doff?
could you doff?
could they doff?

V-ing form

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

Perfect

could I have doffed?
could you have doffed?
could he have doffed?
could we have doffed?
could you have doffed?
could they have doffed?

V-ing perfect

could I have been doffing?
could you have been doffing?
could he have been doffing?
could we have been doffing?
could you have been doffing?
could they have been doffing?

Interro-negative form

Simple form

could I not doff?
could you not doff?
could he not doff?
could we not doff?
could you not doff?
could they not doff?

V-ing form

could I not be doffing?
could you not be doffing?
could he not be doffing?
could we not be doffing?
could you not be doffing?
could they not be doffing?

Perfect

could I not have doffed?
could you not have doffed?
could he not have doffed?
could we not have doffed?
could you not have doffed?
could they not have doffed?

V-ing perfect

could I not have been doffing?
could you not have been doffing?
could he not have been doffing?
could we not have been doffing?
could you not have been doffing?
could they not have been doffing?

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