could reference
Regelmä&szlig;iges Verb: reference - referenced- referenced

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could reference
you could reference
she could reference
we could reference
you could reference
they could reference 	I could be referencing
you could be referencing
she could be referencing
we could be referencing
you could be referencing
they could be referencing	I could have referenced
you could have referenced
she could have referenced
we could have referenced
you could have referenced
they could have referenced	I could have been referencing
you could have been referencing
she could have been referencing
we could have been referencing
you could have been referencing
they could have been referencing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not reference
you could not reference
she could not reference
we could not reference
you could not reference
they could not reference 	I could not be referencing
you could not be referencing
she could not be referencing
we could not be referencing
you could not be referencing
they could not be referencing	I could not have referenced
you could not have referenced
she could not have referenced
we could not have referenced
you could not have referenced
they could not have referenced	I could not have been referencing
you could not have been referencing
she could not have been referencing
we could not have been referencing
you could not have been referencing
they could not have been referencing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I reference?
could you reference?
could she reference?
could we reference?
could you reference?
could they reference? 	could I be referencing?
could you be referencing?
could she be referencing?
could we be referencing?
could you be referencing?
could they be referencing? 	could I have referenced?
could you have referenced?
could she have referenced?
could we have referenced?
could you have referenced?
could they have referenced? 	could I have been referencing?
could you have been referencing?
could she have been referencing?
could we have been referencing?
could you have been referencing?
could they have been referencing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not reference?
could you not reference?
could she not reference?
could we not reference?
could you not reference?
could they not reference? 	could I not be referencing?
could you not be referencing?
could she not be referencing?
could we not be referencing?
could you not be referencing?
could they not be referencing? 	could I not have referenced?
could you not have referenced?
could she not have referenced?
could we not have referenced?
could you not have referenced?
could they not have referenced? 	could I not have been referencing?
could you not have been referencing?
could she not have been referencing?
could we not have been referencing?
could you not have been referencing?
could they not have been referencing?