English verb conjugation COULD REF

Regular verb: ref - refed - refed

Affirmation

Simple form

I could ref
you could ref
he could ref
we could ref
you could ref
they could ref

V-ing form

I could be refing
you could be refing
he could be refing
we could be refing
you could be refing
they could be refing

Perfect

I could have refed
you could have refed
he 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
he could have been refing
we could have been refing
you could have been refing
they could have been refing

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I ref?
could you ref?
could he ref?
could we ref?
could you ref?
could they ref?

V-ing form

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

Perfect

could I have refed?
could you have refed?
could he 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 he have been refing?
could we have been refing?
could you have been refing?
could they have been refing?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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