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
she could sum
we could sum
you could sum
they could sum 	I could be summing
you could be summing
she could be summing
we could be summing
you could be summing
they could be summing	I could have summed
you could have summed
she 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
she 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 couldn't sum
you couldn't sum
she couldn't sum
we couldn't sum
you couldn't sum
they couldn't sum 	I couldn't be summing
you couldn't be summing
she couldn't be summing
we couldn't be summing
you couldn't be summing
they couldn't be summing	I couldn't have summed
you couldn't have summed
she couldn't have summed
we couldn't have summed
you couldn't have summed
they couldn't have summed	I couldn't have been summing
you couldn't have been summing
she couldn't have been summing
we couldn't have been summing
you couldn't have been summing
they couldn't have been summing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I sum?
could you sum?
could she sum?
could we sum?
could you sum?
could they sum? 	could I be summing?
could you be summing?
could she be summing?
could we be summing?
could you be summing?
could they be summing? 	could I have summed?
could you have summed?
could she 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 she 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 	
couldn't I sum?
couldn't you sum?
couldn't she sum?
couldn't we sum?
couldn't you sum?
couldn't they sum? 	couldn't I be summing?
couldn't you be summing?
couldn't she be summing?
couldn't we be summing?
couldn't you be summing?
couldn't they be summing? 	couldn't I have summed?
couldn't you have summed?
couldn't she have summed?
couldn't we have summed?
couldn't you have summed?
couldn't they have summed? 	couldn't I have been summing?
couldn't you have been summing?
couldn't she have been summing?
couldn't we have been summing?
couldn't you have been summing?
couldn't they have been summing?