must countersign
Regelmä&szlig;iges Verb: countersign - countersigned- countersigned

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must countersign
you must countersign
he must countersign
we must countersign
you must countersign
they must countersign 	I must be countersigning
you must be countersigning
he must be countersigning
we must be countersigning
you must be countersigning
they must be countersigning	I must have countersigned
you must have countersigned
he must have countersigned
we must have countersigned
you must have countersigned
they must have countersigned	I must have been countersigning
you must have been countersigning
he must have been countersigning
we must have been countersigning
you must have been countersigning
they must have been countersigning	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I mustn't countersign
you mustn't countersign
he mustn't countersign
we mustn't countersign
you mustn't countersign
they mustn't countersign 	I mustn't be countersigning
you mustn't be countersigning
he mustn't be countersigning
we mustn't be countersigning
you mustn't be countersigning
they mustn't be countersigning	I mustn't have countersigned
you mustn't have countersigned
he mustn't have countersigned
we mustn't have countersigned
you mustn't have countersigned
they mustn't have countersigned	I mustn't have been countersigning
you mustn't have been countersigning
he mustn't have been countersigning
we mustn't have been countersigning
you mustn't have been countersigning
they mustn't have been countersigning	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I countersign?
must you countersign?
must he countersign?
must we countersign?
must you countersign?
must they countersign? 	must I be countersigning?
must you be countersigning?
must he be countersigning?
must we be countersigning?
must you be countersigning?
must they be countersigning? 	must I have countersigned?
must you have countersigned?
must he have countersigned?
must we have countersigned?
must you have countersigned?
must they have countersigned? 	must I have been countersigning?
must you have been countersigning?
must he have been countersigning?
must we have been countersigning?
must you have been countersigning?
must they have been countersigning? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
mustn't I countersign?
mustn't you countersign?
mustn't he countersign?
mustn't we countersign?
mustn't you countersign?
mustn't they countersign? 	mustn't I be countersigning?
mustn't you be countersigning?
mustn't he be countersigning?
mustn't we be countersigning?
mustn't you be countersigning?
mustn't they be countersigning? 	mustn't I have countersigned?
mustn't you have countersigned?
mustn't he have countersigned?
mustn't we have countersigned?
mustn't you have countersigned?
mustn't they have countersigned? 	mustn't I have been countersigning?
mustn't you have been countersigning?
mustn't he have been countersigning?
mustn't we have been countersigning?
mustn't you have been countersigning?
mustn't they have been countersigning?