Conjugaison du verbe anglais COULD NEGOTIATE

I could negotiate
you could negotiate
she could negotiate
we could negotiate
you could negotiate
they could negotiate

I could be negotiating
you could be negotiating
she could be negotiating
we could be negotiating
you could be negotiating
they could be negotiating

I could have negotiated
you could have negotiated
she could have negotiated
we could have negotiated
you could have negotiated
they could have negotiated

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

I couldn't negotiate
you couldn't negotiate
she couldn't negotiate
we couldn't negotiate
you couldn't negotiate
they couldn't negotiate

I couldn't be negotiating
you couldn't be negotiating
she couldn't be negotiating
we couldn't be negotiating
you couldn't be negotiating
they couldn't be negotiating

I couldn't have negotiated
you couldn't have negotiated
she couldn't have negotiated
we couldn't have negotiated
you couldn't have negotiated
they couldn't have negotiated

I couldn't have been negotiating
you couldn't have been negotiating
she couldn't have been negotiating
we couldn't have been negotiating
you couldn't have been negotiating
they couldn't have been negotiating

could I negotiate?
could you negotiate?
could she negotiate?
could we negotiate?
could you negotiate?
could they negotiate?

could I be negotiating?
could you be negotiating?
could she be negotiating?
could we be negotiating?
could you be negotiating?
could they be negotiating?

could I have negotiated?
could you have negotiated?
could she have negotiated?
could we have negotiated?
could you have negotiated?
could they have negotiated?

could I have been negotiating?
could you have been negotiating?
could she have been negotiating?
could we have been negotiating?
could you have been negotiating?
could they have been negotiating?

couldn't I negotiate?
couldn't you negotiate?
couldn't she negotiate?
couldn't we negotiate?
couldn't you negotiate?
couldn't they negotiate?

couldn't I be negotiating?
couldn't you be negotiating?
couldn't she be negotiating?
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couldn't you be negotiating?
couldn't they be negotiating?

couldn't I have negotiated?
couldn't you have negotiated?
couldn't she have negotiated?
couldn't we have negotiated?
couldn't you have negotiated?
couldn't they have negotiated?

couldn't I have been negotiating?
couldn't you have been negotiating?
couldn't she have been negotiating?
couldn't we have been negotiating?
couldn't you have been negotiating?
couldn't they have been negotiating?