must premix
Verbo regular: premix - premixed- premixed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must premix
you must premix
he must premix
we must premix
you must premix
they must premix 	I must be premixing
you must be premixing
he must be premixing
we must be premixing
you must be premixing
they must be premixing	I must have premixed
you must have premixed
he must have premixed
we must have premixed
you must have premixed
they must have premixed	I must have been premixing
you must have been premixing
he must have been premixing
we must have been premixing
you must have been premixing
they must have been premixing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not premix
you must not premix
he must not premix
we must not premix
you must not premix
they must not premix 	I must not be premixing
you must not be premixing
he must not be premixing
we must not be premixing
you must not be premixing
they must not be premixing	I must not have premixed
you must not have premixed
he must not have premixed
we must not have premixed
you must not have premixed
they must not have premixed	I must not have been premixing
you must not have been premixing
he must not have been premixing
we must not have been premixing
you must not have been premixing
they must not have been premixing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I premix?
must you premix?
must he premix?
must we premix?
must you premix?
must they premix? 	must I be premixing?
must you be premixing?
must he be premixing?
must we be premixing?
must you be premixing?
must they be premixing? 	must I have premixed?
must you have premixed?
must he have premixed?
must we have premixed?
must you have premixed?
must they have premixed? 	must I have been premixing?
must you have been premixing?
must he have been premixing?
must we have been premixing?
must you have been premixing?
must they have been premixing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not premix?
must you not premix?
must he not premix?
must we not premix?
must you not premix?
must they not premix? 	must I not be premixing?
must you not be premixing?
must he not be premixing?
must we not be premixing?
must you not be premixing?
must they not be premixing? 	must I not have premixed?
must you not have premixed?
must he not have premixed?
must we not have premixed?
must you not have premixed?
must they not have premixed? 	must I not have been premixing?
must you not have been premixing?
must he not have been premixing?
must we not have been premixing?
must you not have been premixing?
must they not have been premixing?