English verb conjugation
SHOULD NEGOTIATE

Regular verb: negotiate - negotiated - negotiated

Affirmation

Simple form	V-ing form
I'd negotiate you'd negotiate he'd negotiate we'd negotiate you'd negotiate they'd negotiate	I'd be negotiating you'd be negotiating he'd be negotiating we'd be negotiating you'd be negotiating they'd be negotiating
Perfect	V-ing perfect
I should've negotiated you should've negotiated he should've negotiated we should've negotiated you should've negotiated they should've negotiated	I should've been negotiating you should've been negotiating he should've been negotiating we should've been negotiating you should've been negotiating they should've been negotiating

Negation

Simple form	V-ing form
I shouldn't negotiate you shouldn't negotiate he shouldn't negotiate we shouldn't negotiate you shouldn't negotiate they shouldn't negotiate	I shouldn't be negotiating you shouldn't be negotiating he shouldn't be negotiating we shouldn't be negotiating you shouldn't be negotiating they shouldn't be negotiating
Perfect	V-ing perfect
I shouldn't have negotiated you shouldn't have negotiated he shouldn't have negotiated we shouldn't have negotiated you shouldn't have negotiated they shouldn't have negotiated	I shouldn't have been negotiating you shouldn't have been negotiating he shouldn't have been negotiating we shouldn't have been negotiating you shouldn't have been negotiating they shouldn't have been negotiating

Interrogative form

Simple form	V-ing form
should I negotiate? should you negotiate? should he negotiate? should we negotiate? should you negotiate? should they negotiate?	should I be negotiating? should you be negotiating? should he be negotiating? should we be negotiating? should you be negotiating? should they be negotiating?
Perfect	V-ing perfect
should I have negotiated? should you have negotiated? should he have negotiated? should we have negotiated? should you have negotiated? should they have negotiated?	should I have been negotiating? should you have been negotiating? should he have been negotiating? should we have been negotiating? should you have been negotiating? should they have been negotiating?

Interro-negative form

Simple form	V-ing form
shouldn't I negotiate? shouldn't you negotiate? shouldn't he negotiate? shouldn't we negotiate? shouldn't you negotiate? shouldn't they negotiate?	shouldn't I be negotiating? shouldn't you be negotiating? shouldn't he be negotiating? shouldn't we be negotiating? shouldn't you be negotiating? shouldn't they be negotiating?
Perfect	V-ing perfect
shouldn't I have negotiated? shouldn't you have negotiated? shouldn't he have negotiated? shouldn't we have negotiated? shouldn't you have negotiated? shouldn't they have negotiated?	shouldn't I have been negotiating? shouldn't you have been negotiating? shouldn't he have been negotiating? shouldn't we have been negotiating? shouldn't you have been negotiating? shouldn't they have been negotiating?