should concede
Regular verb: concede - conceded- conceded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd concede
you'd concede
she'd concede
we'd concede
you'd concede
they'd concede 	I'd be conceding
you'd be conceding
she'd be conceding
we'd be conceding
you'd be conceding
they'd be conceding	I should've conceded
you should've conceded
she should've conceded
we should've conceded
you should've conceded
they should've conceded	I should've been conceding
you should've been conceding
she should've been conceding
we should've been conceding
you should've been conceding
they should've been conceding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't concede
you shouldn't concede
she shouldn't concede
we shouldn't concede
you shouldn't concede
they shouldn't concede 	I shouldn't be conceding
you shouldn't be conceding
she shouldn't be conceding
we shouldn't be conceding
you shouldn't be conceding
they shouldn't be conceding	I shouldn't have conceded
you shouldn't have conceded
she shouldn't have conceded
we shouldn't have conceded
you shouldn't have conceded
they shouldn't have conceded	I shouldn't have been conceding
you shouldn't have been conceding
she shouldn't have been conceding
we shouldn't have been conceding
you shouldn't have been conceding
they shouldn't have been conceding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I concede?
should you concede?
should she concede?
should we concede?
should you concede?
should they concede? 	should I be conceding?
should you be conceding?
should she be conceding?
should we be conceding?
should you be conceding?
should they be conceding? 	should I have conceded?
should you have conceded?
should she have conceded?
should we have conceded?
should you have conceded?
should they have conceded? 	should I have been conceding?
should you have been conceding?
should she have been conceding?
should we have been conceding?
should you have been conceding?
should they have been conceding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I concede?
shouldn't you concede?
shouldn't she concede?
shouldn't we concede?
shouldn't you concede?
shouldn't they concede? 	shouldn't I be conceding?
shouldn't you be conceding?
shouldn't she be conceding?
shouldn't we be conceding?
shouldn't you be conceding?
shouldn't they be conceding? 	shouldn't I have conceded?
shouldn't you have conceded?
shouldn't she have conceded?
shouldn't we have conceded?
shouldn't you have conceded?
shouldn't they have conceded? 	shouldn't I have been conceding?
shouldn't you have been conceding?
shouldn't she have been conceding?
shouldn't we have been conceding?
shouldn't you have been conceding?
shouldn't they have been conceding?