must heighten
Regelmä&szlig;iges Verb: heighten - heightened- heightened

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must heighten
you must heighten
he must heighten
we must heighten
you must heighten
they must heighten 	I must be heightening
you must be heightening
he must be heightening
we must be heightening
you must be heightening
they must be heightening	I must have heightened
you must have heightened
he must have heightened
we must have heightened
you must have heightened
they must have heightened	I must have been heightening
you must have been heightening
he must have been heightening
we must have been heightening
you must have been heightening
they must have been heightening	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not heighten
you must not heighten
he must not heighten
we must not heighten
you must not heighten
they must not heighten 	I must not be heightening
you must not be heightening
he must not be heightening
we must not be heightening
you must not be heightening
they must not be heightening	I must not have heightened
you must not have heightened
he must not have heightened
we must not have heightened
you must not have heightened
they must not have heightened	I must not have been heightening
you must not have been heightening
he must not have been heightening
we must not have been heightening
you must not have been heightening
they must not have been heightening	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I heighten?
must you heighten?
must he heighten?
must we heighten?
must you heighten?
must they heighten? 	must I be heightening?
must you be heightening?
must he be heightening?
must we be heightening?
must you be heightening?
must they be heightening? 	must I have heightened?
must you have heightened?
must he have heightened?
must we have heightened?
must you have heightened?
must they have heightened? 	must I have been heightening?
must you have been heightening?
must he have been heightening?
must we have been heightening?
must you have been heightening?
must they have been heightening? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not heighten?
must you not heighten?
must he not heighten?
must we not heighten?
must you not heighten?
must they not heighten? 	must I not be heightening?
must you not be heightening?
must he not be heightening?
must we not be heightening?
must you not be heightening?
must they not be heightening? 	must I not have heightened?
must you not have heightened?
must he not have heightened?
must we not have heightened?
must you not have heightened?
must they not have heightened? 	must I not have been heightening?
must you not have been heightening?
must he not have been heightening?
must we not have been heightening?
must you not have been heightening?
must they not have been heightening?