English verb conjugation COULD FRET

Regular verb: fret - fretted - fretted

Affirmation

Simple form

I could fret
you could fret
she could fret
we could fret
you could fret
they could fret

V-ing form

I could be fretting
you could be fretting
she could be fretting
we could be fretting
you could be fretting
they could be fretting

Perfect

I could have fretted
you could have fretted
she could have fretted
we could have fretted
you could have fretted
they could have fretted

V-ing perfect

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

Negation

Simple form

I could not fret
you could not fret
she could not fret
we could not fret
you could not fret
they could not fret

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fret?
could you fret?
could she fret?
could we fret?
could you fret?
could they fret?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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