could ventilate
Regelmä&szlig;iges Verb: ventilate - ventilated- ventilated

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could ventilate
you could ventilate
she could ventilate
we could ventilate
you could ventilate
they could ventilate 	I could be ventilating
you could be ventilating
she could be ventilating
we could be ventilating
you could be ventilating
they could be ventilating	I could have ventilated
you could have ventilated
she could have ventilated
we could have ventilated
you could have ventilated
they could have ventilated	I could have been ventilating
you could have been ventilating
she could have been ventilating
we could have been ventilating
you could have been ventilating
they could have been ventilating	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't ventilate
you couldn't ventilate
she couldn't ventilate
we couldn't ventilate
you couldn't ventilate
they couldn't ventilate 	I couldn't be ventilating
you couldn't be ventilating
she couldn't be ventilating
we couldn't be ventilating
you couldn't be ventilating
they couldn't be ventilating	I couldn't have ventilated
you couldn't have ventilated
she couldn't have ventilated
we couldn't have ventilated
you couldn't have ventilated
they couldn't have ventilated	I couldn't have been ventilating
you couldn't have been ventilating
she couldn't have been ventilating
we couldn't have been ventilating
you couldn't have been ventilating
they couldn't have been ventilating	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I ventilate?
could you ventilate?
could she ventilate?
could we ventilate?
could you ventilate?
could they ventilate? 	could I be ventilating?
could you be ventilating?
could she be ventilating?
could we be ventilating?
could you be ventilating?
could they be ventilating? 	could I have ventilated?
could you have ventilated?
could she have ventilated?
could we have ventilated?
could you have ventilated?
could they have ventilated? 	could I have been ventilating?
could you have been ventilating?
could she have been ventilating?
could we have been ventilating?
could you have been ventilating?
could they have been ventilating? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I ventilate?
couldn't you ventilate?
couldn't she ventilate?
couldn't we ventilate?
couldn't you ventilate?
couldn't they ventilate? 	couldn't I be ventilating?
couldn't you be ventilating?
couldn't she be ventilating?
couldn't we be ventilating?
couldn't you be ventilating?
couldn't they be ventilating? 	couldn't I have ventilated?
couldn't you have ventilated?
couldn't she have ventilated?
couldn't we have ventilated?
couldn't you have ventilated?
couldn't they have ventilated? 	couldn't I have been ventilating?
couldn't you have been ventilating?
couldn't she have been ventilating?
couldn't we have been ventilating?
couldn't you have been ventilating?
couldn't they have been ventilating?