could bill
Regelmä&szlig;iges Verb: bill - billed- billed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could bill
you could bill
he could bill
we could bill
you could bill
they could bill 	I could be billing
you could be billing
he could be billing
we could be billing
you could be billing
they could be billing	I could have billed
you could have billed
he could have billed
we could have billed
you could have billed
they could have billed	I could have been billing
you could have been billing
he could have been billing
we could have been billing
you could have been billing
they could have been billing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not bill
you could not bill
he could not bill
we could not bill
you could not bill
they could not bill 	I could not be billing
you could not be billing
he could not be billing
we could not be billing
you could not be billing
they could not be billing	I could not have billed
you could not have billed
he could not have billed
we could not have billed
you could not have billed
they could not have billed	I could not have been billing
you could not have been billing
he could not have been billing
we could not have been billing
you could not have been billing
they could not have been billing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I bill?
could you bill?
could he bill?
could we bill?
could you bill?
could they bill? 	could I be billing?
could you be billing?
could he be billing?
could we be billing?
could you be billing?
could they be billing? 	could I have billed?
could you have billed?
could he have billed?
could we have billed?
could you have billed?
could they have billed? 	could I have been billing?
could you have been billing?
could he have been billing?
could we have been billing?
could you have been billing?
could they have been billing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not bill?
could you not bill?
could he not bill?
could we not bill?
could you not bill?
could they not bill? 	could I not be billing?
could you not be billing?
could he not be billing?
could we not be billing?
could you not be billing?
could they not be billing? 	could I not have billed?
could you not have billed?
could he not have billed?
could we not have billed?
could you not have billed?
could they not have billed? 	could I not have been billing?
could you not have been billing?
could he not have been billing?
could we not have been billing?
could you not have been billing?
could they not have been billing?