must preboard
Regelmä&szlig;iges Verb: preboard - preboarded- preboarded

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must preboard
you must preboard
he must preboard
we must preboard
you must preboard
they must preboard 	I must be preboarding
you must be preboarding
he must be preboarding
we must be preboarding
you must be preboarding
they must be preboarding	I must have preboarded
you must have preboarded
he must have preboarded
we must have preboarded
you must have preboarded
they must have preboarded	I must have been preboarding
you must have been preboarding
he must have been preboarding
we must have been preboarding
you must have been preboarding
they must have been preboarding	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not preboard
you must not preboard
he must not preboard
we must not preboard
you must not preboard
they must not preboard 	I must not be preboarding
you must not be preboarding
he must not be preboarding
we must not be preboarding
you must not be preboarding
they must not be preboarding	I must not have preboarded
you must not have preboarded
he must not have preboarded
we must not have preboarded
you must not have preboarded
they must not have preboarded	I must not have been preboarding
you must not have been preboarding
he must not have been preboarding
we must not have been preboarding
you must not have been preboarding
they must not have been preboarding	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I preboard?
must you preboard?
must he preboard?
must we preboard?
must you preboard?
must they preboard? 	must I be preboarding?
must you be preboarding?
must he be preboarding?
must we be preboarding?
must you be preboarding?
must they be preboarding? 	must I have preboarded?
must you have preboarded?
must he have preboarded?
must we have preboarded?
must you have preboarded?
must they have preboarded? 	must I have been preboarding?
must you have been preboarding?
must he have been preboarding?
must we have been preboarding?
must you have been preboarding?
must they have been preboarding? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not preboard?
must you not preboard?
must he not preboard?
must we not preboard?
must you not preboard?
must they not preboard? 	must I not be preboarding?
must you not be preboarding?
must he not be preboarding?
must we not be preboarding?
must you not be preboarding?
must they not be preboarding? 	must I not have preboarded?
must you not have preboarded?
must he not have preboarded?
must we not have preboarded?
must you not have preboarded?
must they not have preboarded? 	must I not have been preboarding?
must you not have been preboarding?
must he not have been preboarding?
must we not have been preboarding?
must you not have been preboarding?
must they not have been preboarding?