Conjugaison du verbe anglais COULD INTRODUCE

I could introduce
you could introduce
he could introduce
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you could introduce
they could introduce

I could be introducing
you could be introducing
he could be introducing
we could be introducing
you could be introducing
they could be introducing

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you could have introduced
he could have introduced
we could have introduced
you could have introduced
they could have introduced

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

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

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

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

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

could I introduce?
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couldn't I introduce?
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