must sheaf
Verbo regular: sheaf - sheafed- sheafed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must sheaf
you must sheaf
he must sheaf
we must sheaf
you must sheaf
they must sheaf 	I must be sheafing
you must be sheafing
he must be sheafing
we must be sheafing
you must be sheafing
they must be sheafing	I must have sheafed
you must have sheafed
he must have sheafed
we must have sheafed
you must have sheafed
they must have sheafed	I must have been sheafing
you must have been sheafing
he must have been sheafing
we must have been sheafing
you must have been sheafing
they must have been sheafing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't sheaf
you mustn't sheaf
he mustn't sheaf
we mustn't sheaf
you mustn't sheaf
they mustn't sheaf 	I mustn't be sheafing
you mustn't be sheafing
he mustn't be sheafing
we mustn't be sheafing
you mustn't be sheafing
they mustn't be sheafing	I mustn't have sheafed
you mustn't have sheafed
he mustn't have sheafed
we mustn't have sheafed
you mustn't have sheafed
they mustn't have sheafed	I mustn't have been sheafing
you mustn't have been sheafing
he mustn't have been sheafing
we mustn't have been sheafing
you mustn't have been sheafing
they mustn't have been sheafing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I sheaf?
must you sheaf?
must he sheaf?
must we sheaf?
must you sheaf?
must they sheaf? 	must I be sheafing?
must you be sheafing?
must he be sheafing?
must we be sheafing?
must you be sheafing?
must they be sheafing? 	must I have sheafed?
must you have sheafed?
must he have sheafed?
must we have sheafed?
must you have sheafed?
must they have sheafed? 	must I have been sheafing?
must you have been sheafing?
must he have been sheafing?
must we have been sheafing?
must you have been sheafing?
must they have been sheafing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I sheaf?
mustn't you sheaf?
mustn't he sheaf?
mustn't we sheaf?
mustn't you sheaf?
mustn't they sheaf? 	mustn't I be sheafing?
mustn't you be sheafing?
mustn't he be sheafing?
mustn't we be sheafing?
mustn't you be sheafing?
mustn't they be sheafing? 	mustn't I have sheafed?
mustn't you have sheafed?
mustn't he have sheafed?
mustn't we have sheafed?
mustn't you have sheafed?
mustn't they have sheafed? 	mustn't I have been sheafing?
mustn't you have been sheafing?
mustn't he have been sheafing?
mustn't we have been sheafing?
mustn't you have been sheafing?
mustn't they have been sheafing?