must scuff
Verbo regular: scuff - scuffed- scuffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must scuff
you must scuff
he must scuff
we must scuff
you must scuff
they must scuff 	I must be scuffing
you must be scuffing
he must be scuffing
we must be scuffing
you must be scuffing
they must be scuffing	I must have scuffed
you must have scuffed
he must have scuffed
we must have scuffed
you must have scuffed
they must have scuffed	I must have been scuffing
you must have been scuffing
he must have been scuffing
we must have been scuffing
you must have been scuffing
they must have been scuffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't scuff
you mustn't scuff
he mustn't scuff
we mustn't scuff
you mustn't scuff
they mustn't scuff 	I mustn't be scuffing
you mustn't be scuffing
he mustn't be scuffing
we mustn't be scuffing
you mustn't be scuffing
they mustn't be scuffing	I mustn't have scuffed
you mustn't have scuffed
he mustn't have scuffed
we mustn't have scuffed
you mustn't have scuffed
they mustn't have scuffed	I mustn't have been scuffing
you mustn't have been scuffing
he mustn't have been scuffing
we mustn't have been scuffing
you mustn't have been scuffing
they mustn't have been scuffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I scuff?
must you scuff?
must he scuff?
must we scuff?
must you scuff?
must they scuff? 	must I be scuffing?
must you be scuffing?
must he be scuffing?
must we be scuffing?
must you be scuffing?
must they be scuffing? 	must I have scuffed?
must you have scuffed?
must he have scuffed?
must we have scuffed?
must you have scuffed?
must they have scuffed? 	must I have been scuffing?
must you have been scuffing?
must he have been scuffing?
must we have been scuffing?
must you have been scuffing?
must they have been scuffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I scuff?
mustn't you scuff?
mustn't he scuff?
mustn't we scuff?
mustn't you scuff?
mustn't they scuff? 	mustn't I be scuffing?
mustn't you be scuffing?
mustn't he be scuffing?
mustn't we be scuffing?
mustn't you be scuffing?
mustn't they be scuffing? 	mustn't I have scuffed?
mustn't you have scuffed?
mustn't he have scuffed?
mustn't we have scuffed?
mustn't you have scuffed?
mustn't they have scuffed? 	mustn't I have been scuffing?
mustn't you have been scuffing?
mustn't he have been scuffing?
mustn't we have been scuffing?
mustn't you have been scuffing?
mustn't they have been scuffing?