could concert
Regelmä&szlig;iges Verb: concert - concerted- concerted

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could concert
you could concert
he could concert
we could concert
you could concert
they could concert 	I could be concerting
you could be concerting
he could be concerting
we could be concerting
you could be concerting
they could be concerting	I could have concerted
you could have concerted
he could have concerted
we could have concerted
you could have concerted
they could have concerted	I could have been concerting
you could have been concerting
he could have been concerting
we could have been concerting
you could have been concerting
they could have been concerting	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not concert
you could not concert
he could not concert
we could not concert
you could not concert
they could not concert 	I could not be concerting
you could not be concerting
he could not be concerting
we could not be concerting
you could not be concerting
they could not be concerting	I could not have concerted
you could not have concerted
he could not have concerted
we could not have concerted
you could not have concerted
they could not have concerted	I could not have been concerting
you could not have been concerting
he could not have been concerting
we could not have been concerting
you could not have been concerting
they could not have been concerting	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I concert?
could you concert?
could he concert?
could we concert?
could you concert?
could they concert? 	could I be concerting?
could you be concerting?
could he be concerting?
could we be concerting?
could you be concerting?
could they be concerting? 	could I have concerted?
could you have concerted?
could he have concerted?
could we have concerted?
could you have concerted?
could they have concerted? 	could I have been concerting?
could you have been concerting?
could he have been concerting?
could we have been concerting?
could you have been concerting?
could they have been concerting? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not concert?
could you not concert?
could he not concert?
could we not concert?
could you not concert?
could they not concert? 	could I not be concerting?
could you not be concerting?
could he not be concerting?
could we not be concerting?
could you not be concerting?
could they not be concerting? 	could I not have concerted?
could you not have concerted?
could he not have concerted?
could we not have concerted?
could you not have concerted?
could they not have concerted? 	could I not have been concerting?
could you not have been concerting?
could he not have been concerting?
could we not have been concerting?
could you not have been concerting?
could they not have been concerting?