Conjugaison du verbe anglais COULD INSERT

I could insert
you could insert
he could insert
we could insert
you could insert
they could insert

I could be inserting
you could be inserting
he could be inserting
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they could be inserting

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they could have inserted

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they could have been inserting

I couldn't insert
you couldn't insert
he couldn't insert
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they couldn't insert

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you couldn't be inserting
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they couldn't have been inserting

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