must fluff
Regular verb: fluff - fluffed- fluffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fluff
you must fluff
he must fluff
we must fluff
you must fluff
they must fluff 	I must be fluffing
you must be fluffing
he must be fluffing
we must be fluffing
you must be fluffing
they must be fluffing	I must have fluffed
you must have fluffed
he must have fluffed
we must have fluffed
you must have fluffed
they must have fluffed	I must have been fluffing
you must have been fluffing
he must have been fluffing
we must have been fluffing
you must have been fluffing
they must have been fluffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not fluff
you must not fluff
he must not fluff
we must not fluff
you must not fluff
they must not fluff 	I must not be fluffing
you must not be fluffing
he must not be fluffing
we must not be fluffing
you must not be fluffing
they must not be fluffing	I must not have fluffed
you must not have fluffed
he must not have fluffed
we must not have fluffed
you must not have fluffed
they must not have fluffed	I must not have been fluffing
you must not have been fluffing
he must not have been fluffing
we must not have been fluffing
you must not have been fluffing
they must not have been fluffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fluff?
must you fluff?
must he fluff?
must we fluff?
must you fluff?
must they fluff? 	must I be fluffing?
must you be fluffing?
must he be fluffing?
must we be fluffing?
must you be fluffing?
must they be fluffing? 	must I have fluffed?
must you have fluffed?
must he have fluffed?
must we have fluffed?
must you have fluffed?
must they have fluffed? 	must I have been fluffing?
must you have been fluffing?
must he have been fluffing?
must we have been fluffing?
must you have been fluffing?
must they have been fluffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not fluff?
must you not fluff?
must he not fluff?
must we not fluff?
must you not fluff?
must they not fluff? 	must I not be fluffing?
must you not be fluffing?
must he not be fluffing?
must we not be fluffing?
must you not be fluffing?
must they not be fluffing? 	must I not have fluffed?
must you not have fluffed?
must he not have fluffed?
must we not have fluffed?
must you not have fluffed?
must they not have fluffed? 	must I not have been fluffing?
must you not have been fluffing?
must he not have been fluffing?
must we not have been fluffing?
must you not have been fluffing?
must they not have been fluffing?