must auction
Verbo regular: auction - auctioned- auctioned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must auction
you must auction
he must auction
we must auction
you must auction
they must auction 	I must be auctioning
you must be auctioning
he must be auctioning
we must be auctioning
you must be auctioning
they must be auctioning	I must have auctioned
you must have auctioned
he must have auctioned
we must have auctioned
you must have auctioned
they must have auctioned	I must have been auctioning
you must have been auctioning
he must have been auctioning
we must have been auctioning
you must have been auctioning
they must have been auctioning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not auction
you must not auction
he must not auction
we must not auction
you must not auction
they must not auction 	I must not be auctioning
you must not be auctioning
he must not be auctioning
we must not be auctioning
you must not be auctioning
they must not be auctioning	I must not have auctioned
you must not have auctioned
he must not have auctioned
we must not have auctioned
you must not have auctioned
they must not have auctioned	I must not have been auctioning
you must not have been auctioning
he must not have been auctioning
we must not have been auctioning
you must not have been auctioning
they must not have been auctioning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I auction?
must you auction?
must he auction?
must we auction?
must you auction?
must they auction? 	must I be auctioning?
must you be auctioning?
must he be auctioning?
must we be auctioning?
must you be auctioning?
must they be auctioning? 	must I have auctioned?
must you have auctioned?
must he have auctioned?
must we have auctioned?
must you have auctioned?
must they have auctioned? 	must I have been auctioning?
must you have been auctioning?
must he have been auctioning?
must we have been auctioning?
must you have been auctioning?
must they have been auctioning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not auction?
must you not auction?
must he not auction?
must we not auction?
must you not auction?
must they not auction? 	must I not be auctioning?
must you not be auctioning?
must he not be auctioning?
must we not be auctioning?
must you not be auctioning?
must they not be auctioning? 	must I not have auctioned?
must you not have auctioned?
must he not have auctioned?
must we not have auctioned?
must you not have auctioned?
must they not have auctioned? 	must I not have been auctioning?
must you not have been auctioning?
must he not have been auctioning?
must we not have been auctioning?
must you not have been auctioning?
must they not have been auctioning?