Conjugaison du verbe anglais COULD PRODUCE

I could produce
you could produce
he could produce
we could produce
you could produce
they could produce

I could be producing
you could be producing
he could be producing
we could be producing
you could be producing
they could be producing

I could have produced
you could have produced
he could have produced
we could have produced
you could have produced
they could have produced

I could have been producing
you could have been producing
he 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
he could not produce
we could not produce
you could not produce
they could not produce

I could not be producing
you could not be producing
he 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
he 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
he 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 he produce?
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could you produce?
could they produce?

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could you be producing?
could he be producing?
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could you be producing?
could they be producing?

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could you have produced?
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could they have produced?

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could you have been producing?
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could I not produce?
could you not produce?
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could you not 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 he not have been producing?
could we not have been producing?
could you not have been producing?
could they not have been producing?