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 must not sheaf
you must not sheaf
he must not sheaf
we must not sheaf
you must not sheaf
they must not sheaf 	I must not be sheafing
you must not be sheafing
he must not be sheafing
we must not be sheafing
you must not be sheafing
they must not be sheafing	I must not have sheafed
you must not have sheafed
he must not have sheafed
we must not have sheafed
you must not have sheafed
they must not have sheafed	I must not have been sheafing
you must not have been sheafing
he must not have been sheafing
we must not have been sheafing
you must not have been sheafing
they must not 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 	
must I not sheaf?
must you not sheaf?
must he not sheaf?
must we not sheaf?
must you not sheaf?
must they not sheaf? 	must I not be sheafing?
must you not be sheafing?
must he not be sheafing?
must we not be sheafing?
must you not be sheafing?
must they not be sheafing? 	must I not have sheafed?
must you not have sheafed?
must he not have sheafed?
must we not have sheafed?
must you not have sheafed?
must they not have sheafed? 	must I not have been sheafing?
must you not have been sheafing?
must he not have been sheafing?
must we not have been sheafing?
must you not have been sheafing?
must they not have been sheafing?