should concert
Regular verb: concert - concerted- concerted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd concert
you'd concert
he'd concert
we'd concert
you'd concert
they'd concert 	I'd be concerting
you'd be concerting
he'd be concerting
we'd be concerting
you'd be concerting
they'd be concerting	I should've concerted
you should've concerted
he should've concerted
we should've concerted
you should've concerted
they should've concerted	I should've been concerting
you should've been concerting
he should've been concerting
we should've been concerting
you should've been concerting
they should've been concerting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't concert
you shouldn't concert
he shouldn't concert
we shouldn't concert
you shouldn't concert
they shouldn't concert 	I shouldn't be concerting
you shouldn't be concerting
he shouldn't be concerting
we shouldn't be concerting
you shouldn't be concerting
they shouldn't be concerting	I shouldn't have concerted
you shouldn't have concerted
he shouldn't have concerted
we shouldn't have concerted
you shouldn't have concerted
they shouldn't have concerted	I shouldn't have been concerting
you shouldn't have been concerting
he shouldn't have been concerting
we shouldn't have been concerting
you shouldn't have been concerting
they shouldn't have been concerting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I concert?
should you concert?
should he concert?
should we concert?
should you concert?
should they concert? 	should I be concerting?
should you be concerting?
should he be concerting?
should we be concerting?
should you be concerting?
should they be concerting? 	should I have concerted?
should you have concerted?
should he have concerted?
should we have concerted?
should you have concerted?
should they have concerted? 	should I have been concerting?
should you have been concerting?
should he have been concerting?
should we have been concerting?
should you have been concerting?
should they have been concerting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I concert?
shouldn't you concert?
shouldn't he concert?
shouldn't we concert?
shouldn't you concert?
shouldn't they concert? 	shouldn't I be concerting?
shouldn't you be concerting?
shouldn't he be concerting?
shouldn't we be concerting?
shouldn't you be concerting?
shouldn't they be concerting? 	shouldn't I have concerted?
shouldn't you have concerted?
shouldn't he have concerted?
shouldn't we have concerted?
shouldn't you have concerted?
shouldn't they have concerted? 	shouldn't I have been concerting?
shouldn't you have been concerting?
shouldn't he have been concerting?
shouldn't we have been concerting?
shouldn't you have been concerting?
shouldn't they have been concerting?