Coniugazione del verbo inglese COULD DEMONSTRATE

I could demonstrate
you could demonstrate
she could demonstrate
we could demonstrate
you could demonstrate
they could demonstrate

I could be demonstrating
you could be demonstrating
she could be demonstrating
we could be demonstrating
you could be demonstrating
they could be demonstrating

I could have demonstrated
you could have demonstrated
she could have demonstrated
we could have demonstrated
you could have demonstrated
they could have demonstrated

I could have been demonstrating
you could have been demonstrating
she could have been demonstrating
we could have been demonstrating
you could have been demonstrating
they could have been demonstrating

I could not demonstrate
you could not demonstrate
she could not demonstrate
we could not demonstrate
you could not demonstrate
they could not demonstrate

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

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

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

could I demonstrate?
could you demonstrate?
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could they demonstrate?

could I be demonstrating?
could you be demonstrating?
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could they be demonstrating?

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could you have demonstrated?
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could they have demonstrated?

could I have been demonstrating?
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could they have been demonstrating?

could I not demonstrate?
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could you not be demonstrating?
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could they not be demonstrating?

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could they not have demonstrated?

could I not have been demonstrating?
could you not have been demonstrating?
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could they not have been demonstrating?