English verb conjugation COULD REFUEL

Regular verb: refuel - refuelled - refuelled

Affirmation

Simple form

I could refuel
you could refuel
he could refuel
we could refuel
you could refuel
they could refuel

V-ing form

I could be refuelling
you could be refuelling
he could be refuelling
we could be refuelling
you could be refuelling
they could be refuelling

Perfect

I could have refuelled
you could have refuelled
he could have refuelled
we could have refuelled
you could have refuelled
they could have refuelled

V-ing perfect

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

Negation

Simple form

I could not refuel
you could not refuel
he could not refuel
we could not refuel
you could not refuel
they could not refuel

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I refuel?
could you refuel?
could he refuel?
could we refuel?
could you refuel?
could they refuel?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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