Conjugaison du verbe anglais COULD PROGRESS

I could progress
you could progress
she could progress
we could progress
you could progress
they could progress

I could be progressing
you could be progressing
she could be progressing
we could be progressing
you could be progressing
they could be progressing

I could have progressed
you could have progressed
she could have progressed
we could have progressed
you could have progressed
they could have progressed

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

I could not progress
you could not progress
she could not progress
we could not progress
you could not progress
they could not progress

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

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

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

could I progress?
could you progress?
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could I not progress?
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could you not have been progressing?
could she not have been progressing?
could we not have been progressing?
could you not have been progressing?
could they not have been progressing?