English verb conjugation COULD FLUCTUATE

Regular verb: fluctuate - fluctuated - fluctuated

Affirmation

Simple form

I could fluctuate
you could fluctuate
he could fluctuate
we could fluctuate
you could fluctuate
they could fluctuate

V-ing form

I could be fluctuating
you could be fluctuating
he could be fluctuating
we could be fluctuating
you could be fluctuating
they could be fluctuating

Perfect

I could have fluctuated
you could have fluctuated
he could have fluctuated
we could have fluctuated
you could have fluctuated
they could have fluctuated

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I fluctuate?
could you fluctuate?
could he fluctuate?
could we fluctuate?
could you fluctuate?
could they fluctuate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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