must backfill
Regelmä&szlig;iges Verb: backfill - backfilled- backfilled

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must backfill
you must backfill
he must backfill
we must backfill
you must backfill
they must backfill 	I must be backfilling
you must be backfilling
he must be backfilling
we must be backfilling
you must be backfilling
they must be backfilling	I must have backfilled
you must have backfilled
he must have backfilled
we must have backfilled
you must have backfilled
they must have backfilled	I must have been backfilling
you must have been backfilling
he must have been backfilling
we must have been backfilling
you must have been backfilling
they must have been backfilling	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not backfill
you must not backfill
he must not backfill
we must not backfill
you must not backfill
they must not backfill 	I must not be backfilling
you must not be backfilling
he must not be backfilling
we must not be backfilling
you must not be backfilling
they must not be backfilling	I must not have backfilled
you must not have backfilled
he must not have backfilled
we must not have backfilled
you must not have backfilled
they must not have backfilled	I must not have been backfilling
you must not have been backfilling
he must not have been backfilling
we must not have been backfilling
you must not have been backfilling
they must not have been backfilling	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I backfill?
must you backfill?
must he backfill?
must we backfill?
must you backfill?
must they backfill? 	must I be backfilling?
must you be backfilling?
must he be backfilling?
must we be backfilling?
must you be backfilling?
must they be backfilling? 	must I have backfilled?
must you have backfilled?
must he have backfilled?
must we have backfilled?
must you have backfilled?
must they have backfilled? 	must I have been backfilling?
must you have been backfilling?
must he have been backfilling?
must we have been backfilling?
must you have been backfilling?
must they have been backfilling? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not backfill?
must you not backfill?
must he not backfill?
must we not backfill?
must you not backfill?
must they not backfill? 	must I not be backfilling?
must you not be backfilling?
must he not be backfilling?
must we not be backfilling?
must you not be backfilling?
must they not be backfilling? 	must I not have backfilled?
must you not have backfilled?
must he not have backfilled?
must we not have backfilled?
must you not have backfilled?
must they not have backfilled? 	must I not have been backfilling?
must you not have been backfilling?
must he not have been backfilling?
must we not have been backfilling?
must you not have been backfilling?
must they not have been backfilling?