must undo
Unregelmä&szlig;iges Verb: undo - undid- undone

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must undo
you must undo
she must undo
we must undo
you must undo
they must undo 	I must be undoing
you must be undoing
she must be undoing
we must be undoing
you must be undoing
they must be undoing	I must have undone
you must have undone
she must have undone
we must have undone
you must have undone
they must have undone	I must have been undoing
you must have been undoing
she must have been undoing
we must have been undoing
you must have been undoing
they must have been undoing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not undo
you must not undo
she must not undo
we must not undo
you must not undo
they must not undo 	I must not be undoing
you must not be undoing
she must not be undoing
we must not be undoing
you must not be undoing
they must not be undoing	I must not have undone
you must not have undone
she must not have undone
we must not have undone
you must not have undone
they must not have undone	I must not have been undoing
you must not have been undoing
she must not have been undoing
we must not have been undoing
you must not have been undoing
they must not have been undoing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I undo?
must you undo?
must she undo?
must we undo?
must you undo?
must they undo? 	must I be undoing?
must you be undoing?
must she be undoing?
must we be undoing?
must you be undoing?
must they be undoing? 	must I have undone?
must you have undone?
must she have undone?
must we have undone?
must you have undone?
must they have undone? 	must I have been undoing?
must you have been undoing?
must she have been undoing?
must we have been undoing?
must you have been undoing?
must they have been undoing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not undo?
must you not undo?
must she not undo?
must we not undo?
must you not undo?
must they not undo? 	must I not be undoing?
must you not be undoing?
must she not be undoing?
must we not be undoing?
must you not be undoing?
must they not be undoing? 	must I not have undone?
must you not have undone?
must she not have undone?
must we not have undone?
must you not have undone?
must they not have undone? 	must I not have been undoing?
must you not have been undoing?
must she not have been undoing?
must we not have been undoing?
must you not have been undoing?
must they not have been undoing?