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

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

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

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

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