could open
Regelmä&szlig;iges Verb: open - opened- opened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could open
you could open
she could open
we could open
you could open
they could open 	I could be opening
you could be opening
she could be opening
we could be opening
you could be opening
they could be opening	I could have opened
you could have opened
she could have opened
we could have opened
you could have opened
they could have opened	I could have been opening
you could have been opening
she could have been opening
we could have been opening
you could have been opening
they could have been opening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I couldn't open
you couldn't open
she couldn't open
we couldn't open
you couldn't open
they couldn't open 	I couldn't be opening
you couldn't be opening
she couldn't be opening
we couldn't be opening
you couldn't be opening
they couldn't be opening	I couldn't have opened
you couldn't have opened
she couldn't have opened
we couldn't have opened
you couldn't have opened
they couldn't have opened	I couldn't have been opening
you couldn't have been opening
she couldn't have been opening
we couldn't have been opening
you couldn't have been opening
they couldn't have been opening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I open?
could you open?
could she open?
could we open?
could you open?
could they open? 	could I be opening?
could you be opening?
could she be opening?
could we be opening?
could you be opening?
could they be opening? 	could I have opened?
could you have opened?
could she have opened?
could we have opened?
could you have opened?
could they have opened? 	could I have been opening?
could you have been opening?
could she have been opening?
could we have been opening?
could you have been opening?
could they have been opening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
couldn't I open?
couldn't you open?
couldn't she open?
couldn't we open?
couldn't you open?
couldn't they open? 	couldn't I be opening?
couldn't you be opening?
couldn't she be opening?
couldn't we be opening?
couldn't you be opening?
couldn't they be opening? 	couldn't I have opened?
couldn't you have opened?
couldn't she have opened?
couldn't we have opened?
couldn't you have opened?
couldn't they have opened? 	couldn't I have been opening?
couldn't you have been opening?
couldn't she have been opening?
couldn't we have been opening?
couldn't you have been opening?
couldn't they have been opening?