Conjugaison du verbe anglais COULD PRODUCE

I could produce
you could produce
she could produce
we could produce
you could produce
they could produce

I could be producing
you could be producing
she could be producing
we could be producing
you could be producing
they could be producing

I could have produced
you could have produced
she could have produced
we could have produced
you could have produced
they could have produced

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you could have been producing
she could have been producing
we could have been producing
you could have been producing
they could have been producing

I could not produce
you could not produce
she could not produce
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you could not produce
they could not produce

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

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

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

could I produce?
could you produce?
could she produce?
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could they produce?

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could you be producing?
could she be producing?
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could you be producing?
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could they not be producing?

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could they not have produced?

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could you not have been producing?
could she not have been producing?
could we not have been producing?
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could they not have been producing?