must flabbergast
Verbe régulier : flabbergast - flabbergasted- flabbergasted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must flabbergast
you must flabbergast
he must flabbergast
we must flabbergast
you must flabbergast
they must flabbergast 	I must be flabbergasting
you must be flabbergasting
he must be flabbergasting
we must be flabbergasting
you must be flabbergasting
they must be flabbergasting	I must have flabbergasted
you must have flabbergasted
he must have flabbergasted
we must have flabbergasted
you must have flabbergasted
they must have flabbergasted	I must have been flabbergasting
you must have been flabbergasting
he must have been flabbergasting
we must have been flabbergasting
you must have been flabbergasting
they must have been flabbergasting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not flabbergast
you must not flabbergast
he must not flabbergast
we must not flabbergast
you must not flabbergast
they must not flabbergast 	I must not be flabbergasting
you must not be flabbergasting
he must not be flabbergasting
we must not be flabbergasting
you must not be flabbergasting
they must not be flabbergasting	I must not have flabbergasted
you must not have flabbergasted
he must not have flabbergasted
we must not have flabbergasted
you must not have flabbergasted
they must not have flabbergasted	I must not have been flabbergasting
you must not have been flabbergasting
he must not have been flabbergasting
we must not have been flabbergasting
you must not have been flabbergasting
they must not have been flabbergasting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I flabbergast?
must you flabbergast?
must he flabbergast?
must we flabbergast?
must you flabbergast?
must they flabbergast? 	must I be flabbergasting?
must you be flabbergasting?
must he be flabbergasting?
must we be flabbergasting?
must you be flabbergasting?
must they be flabbergasting? 	must I have flabbergasted?
must you have flabbergasted?
must he have flabbergasted?
must we have flabbergasted?
must you have flabbergasted?
must they have flabbergasted? 	must I have been flabbergasting?
must you have been flabbergasting?
must he have been flabbergasting?
must we have been flabbergasting?
must you have been flabbergasting?
must they have been flabbergasting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not flabbergast?
must you not flabbergast?
must he not flabbergast?
must we not flabbergast?
must you not flabbergast?
must they not flabbergast? 	must I not be flabbergasting?
must you not be flabbergasting?
must he not be flabbergasting?
must we not be flabbergasting?
must you not be flabbergasting?
must they not be flabbergasting? 	must I not have flabbergasted?
must you not have flabbergasted?
must he not have flabbergasted?
must we not have flabbergasted?
must you not have flabbergasted?
must they not have flabbergasted? 	must I not have been flabbergasting?
must you not have been flabbergasting?
must he not have been flabbergasting?
must we not have been flabbergasting?
must you not have been flabbergasting?
must they not have been flabbergasting?