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 must not scuff
you must not scuff
he must not scuff
we must not scuff
you must not scuff
they must not scuff 	I must not be scuffing
you must not be scuffing
he must not be scuffing
we must not be scuffing
you must not be scuffing
they must not be scuffing	I must not have scuffed
you must not have scuffed
he must not have scuffed
we must not have scuffed
you must not have scuffed
they must not have scuffed	I must not have been scuffing
you must not have been scuffing
he must not have been scuffing
we must not have been scuffing
you must not have been scuffing
they must not 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 	
must I not scuff?
must you not scuff?
must he not scuff?
must we not scuff?
must you not scuff?
must they not scuff? 	must I not be scuffing?
must you not be scuffing?
must he not be scuffing?
must we not be scuffing?
must you not be scuffing?
must they not be scuffing? 	must I not have scuffed?
must you not have scuffed?
must he not have scuffed?
must we not have scuffed?
must you not have scuffed?
must they not have scuffed? 	must I not have been scuffing?
must you not have been scuffing?
must he not have been scuffing?
must we not have been scuffing?
must you not have been scuffing?
must they not have been scuffing?