English verb conjugation COULD FEVER

Regular verb: fever - fevered - fevered

Affirmation

Simple form

I could fever
you could fever
he could fever
we could fever
you could fever
they could fever

V-ing form

I could be fevering
you could be fevering
he could be fevering
we could be fevering
you could be fevering
they could be fevering

Perfect

I could have fevered
you could have fevered
he could have fevered
we could have fevered
you could have fevered
they could have fevered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fever?
could you fever?
could he fever?
could we fever?
could you fever?
could they fever?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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