should negotiate
Regular verb: negotiate - negotiated- negotiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd negotiate
you'd negotiate
she'd negotiate
we'd negotiate
you'd negotiate
they'd negotiate 	I'd be negotiating
you'd be negotiating
she'd be negotiating
we'd be negotiating
you'd be negotiating
they'd be negotiating	I should've negotiated
you should've negotiated
she 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
she 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 	Perfect 	V-ing perfect 	
I shouldn't negotiate
you shouldn't negotiate
she 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
she shouldn't be negotiating
we shouldn't be negotiating
you shouldn't be negotiating
they shouldn't be negotiating	I shouldn't have negotiated
you shouldn't have negotiated
she 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
she 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 	Perfect 	V-ing perfect 	
should I negotiate?
should you negotiate?
should she negotiate?
should we negotiate?
should you negotiate?
should they negotiate? 	should I be negotiating?
should you be negotiating?
should she be negotiating?
should we be negotiating?
should you be negotiating?
should they be negotiating? 	should I have negotiated?
should you have negotiated?
should she 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 she 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 	Perfect 	V-ing perfect 	
shouldn't I negotiate?
shouldn't you negotiate?
shouldn't she 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 she be negotiating?
shouldn't we be negotiating?
shouldn't you be negotiating?
shouldn't they be negotiating? 	shouldn't I have negotiated?
shouldn't you have negotiated?
shouldn't she 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 she have been negotiating?
shouldn't we have been negotiating?
shouldn't you have been negotiating?
shouldn't they have been negotiating?