English verb conjugation
COULD NEGOTIATE

Regular verb: negotiate - negotiated - negotiated

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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? couldn't we be negotiating? couldn't you be negotiating? couldn't they be negotiating?
Perfect	V-ing perfect
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?