could sum
Regelmä&szlig;iges Verb: sum - summed- summed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could sum
you could sum
he could sum
we could sum
you could sum
they could sum 	I could be summing
you could be summing
he could be summing
we could be summing
you could be summing
they could be summing	I could have summed
you could have summed
he could have summed
we could have summed
you could have summed
they could have summed	I could have been summing
you could have been summing
he could have been summing
we could have been summing
you could have been summing
they could have been summing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not sum
you could not sum
he could not sum
we could not sum
you could not sum
they could not sum 	I could not be summing
you could not be summing
he could not be summing
we could not be summing
you could not be summing
they could not be summing	I could not have summed
you could not have summed
he could not have summed
we could not have summed
you could not have summed
they could not have summed	I could not have been summing
you could not have been summing
he could not have been summing
we could not have been summing
you could not have been summing
they could not have been summing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I sum?
could you sum?
could he sum?
could we sum?
could you sum?
could they sum? 	could I be summing?
could you be summing?
could he be summing?
could we be summing?
could you be summing?
could they be summing? 	could I have summed?
could you have summed?
could he have summed?
could we have summed?
could you have summed?
could they have summed? 	could I have been summing?
could you have been summing?
could he have been summing?
could we have been summing?
could you have been summing?
could they have been summing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not sum?
could you not sum?
could he not sum?
could we not sum?
could you not sum?
could they not sum? 	could I not be summing?
could you not be summing?
could he not be summing?
could we not be summing?
could you not be summing?
could they not be summing? 	could I not have summed?
could you not have summed?
could he not have summed?
could we not have summed?
could you not have summed?
could they not have summed? 	could I not have been summing?
could you not have been summing?
could he not have been summing?
could we not have been summing?
could you not have been summing?
could they not have been summing?