English verb conjugation COULD FELL

Regular verb: fell - felled - felled

Affirmation

Simple form

I could fell
you could fell
he could fell
we could fell
you could fell
they could fell

V-ing form

I could be felling
you could be felling
he could be felling
we could be felling
you could be felling
they could be felling

Perfect

I could have felled
you could have felled
he could have felled
we could have felled
you could have felled
they could have felled

V-ing perfect

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

Negation

Simple form

I could not fell
you could not fell
he could not fell
we could not fell
you could not fell
they could not fell

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fell?
could you fell?
could he fell?
could we fell?
could you fell?
could they fell?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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