English verb conjugation COULD REF

Regular verb: ref - refed - refed

Affirmation

Simple form

I could ref
you could ref
she could ref
we could ref
you could ref
they could ref

V-ing form

I could be refing
you could be refing
she could be refing
we could be refing
you could be refing
they could be refing

Perfect

I could have refed
you could have refed
she could have refed
we could have refed
you could have refed
they could have refed

V-ing perfect

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

Negation

Simple form

I could not ref
you could not ref
she could not ref
we could not ref
you could not ref
they could not ref

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I ref?
could you ref?
could she ref?
could we ref?
could you ref?
could they ref?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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