English verb conjugation COULD FLUCTUATE

Regular verb: fluctuate - fluctuated - fluctuated

Affirmation

Simple form

I could fluctuate
you could fluctuate
she could fluctuate
we could fluctuate
you could fluctuate
they could fluctuate

V-ing form

I could be fluctuating
you could be fluctuating
she could be fluctuating
we could be fluctuating
you could be fluctuating
they could be fluctuating

Perfect

I could have fluctuated
you could have fluctuated
she 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
she 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
she 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
she 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
she 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
she 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 she fluctuate?
could we fluctuate?
could you fluctuate?
could they fluctuate?

V-ing form

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

Perfect

could I have fluctuated?
could you have fluctuated?
could she 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 she 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 she 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 she 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 she 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 she 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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