could unbutton
Regelmä&szlig;iges Verb: unbutton - unbuttoned- unbuttoned

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could unbutton
you could unbutton
he could unbutton
we could unbutton
you could unbutton
they could unbutton 	I could be unbuttoning
you could be unbuttoning
he could be unbuttoning
we could be unbuttoning
you could be unbuttoning
they could be unbuttoning	I could have unbuttoned
you could have unbuttoned
he could have unbuttoned
we could have unbuttoned
you could have unbuttoned
they could have unbuttoned	I could have been unbuttoning
you could have been unbuttoning
he could have been unbuttoning
we could have been unbuttoning
you could have been unbuttoning
they could have been unbuttoning	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I could not unbutton
you could not unbutton
he could not unbutton
we could not unbutton
you could not unbutton
they could not unbutton 	I could not be unbuttoning
you could not be unbuttoning
he could not be unbuttoning
we could not be unbuttoning
you could not be unbuttoning
they could not be unbuttoning	I could not have unbuttoned
you could not have unbuttoned
he could not have unbuttoned
we could not have unbuttoned
you could not have unbuttoned
they could not have unbuttoned	I could not have been unbuttoning
you could not have been unbuttoning
he could not have been unbuttoning
we could not have been unbuttoning
you could not have been unbuttoning
they could not have been unbuttoning	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I unbutton?
could you unbutton?
could he unbutton?
could we unbutton?
could you unbutton?
could they unbutton? 	could I be unbuttoning?
could you be unbuttoning?
could he be unbuttoning?
could we be unbuttoning?
could you be unbuttoning?
could they be unbuttoning? 	could I have unbuttoned?
could you have unbuttoned?
could he have unbuttoned?
could we have unbuttoned?
could you have unbuttoned?
could they have unbuttoned? 	could I have been unbuttoning?
could you have been unbuttoning?
could he have been unbuttoning?
could we have been unbuttoning?
could you have been unbuttoning?
could they have been unbuttoning? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
could I not unbutton?
could you not unbutton?
could he not unbutton?
could we not unbutton?
could you not unbutton?
could they not unbutton? 	could I not be unbuttoning?
could you not be unbuttoning?
could he not be unbuttoning?
could we not be unbuttoning?
could you not be unbuttoning?
could they not be unbuttoning? 	could I not have unbuttoned?
could you not have unbuttoned?
could he not have unbuttoned?
could we not have unbuttoned?
could you not have unbuttoned?
could they not have unbuttoned? 	could I not have been unbuttoning?
could you not have been unbuttoning?
could he not have been unbuttoning?
could we not have been unbuttoning?
could you not have been unbuttoning?
could they not have been unbuttoning?