must prefocus
Verbo regular: prefocus - prefocused- prefocused

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must prefocus
you must prefocus
she must prefocus
we must prefocus
you must prefocus
they must prefocus 	I must be prefocusing
you must be prefocusing
she must be prefocusing
we must be prefocusing
you must be prefocusing
they must be prefocusing	I must have prefocused
you must have prefocused
she must have prefocused
we must have prefocused
you must have prefocused
they must have prefocused	I must have been prefocusing
you must have been prefocusing
she must have been prefocusing
we must have been prefocusing
you must have been prefocusing
they must have been prefocusing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not prefocus
you must not prefocus
she must not prefocus
we must not prefocus
you must not prefocus
they must not prefocus 	I must not be prefocusing
you must not be prefocusing
she must not be prefocusing
we must not be prefocusing
you must not be prefocusing
they must not be prefocusing	I must not have prefocused
you must not have prefocused
she must not have prefocused
we must not have prefocused
you must not have prefocused
they must not have prefocused	I must not have been prefocusing
you must not have been prefocusing
she must not have been prefocusing
we must not have been prefocusing
you must not have been prefocusing
they must not have been prefocusing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I prefocus?
must you prefocus?
must she prefocus?
must we prefocus?
must you prefocus?
must they prefocus? 	must I be prefocusing?
must you be prefocusing?
must she be prefocusing?
must we be prefocusing?
must you be prefocusing?
must they be prefocusing? 	must I have prefocused?
must you have prefocused?
must she have prefocused?
must we have prefocused?
must you have prefocused?
must they have prefocused? 	must I have been prefocusing?
must you have been prefocusing?
must she have been prefocusing?
must we have been prefocusing?
must you have been prefocusing?
must they have been prefocusing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not prefocus?
must you not prefocus?
must she not prefocus?
must we not prefocus?
must you not prefocus?
must they not prefocus? 	must I not be prefocusing?
must you not be prefocusing?
must she not be prefocusing?
must we not be prefocusing?
must you not be prefocusing?
must they not be prefocusing? 	must I not have prefocused?
must you not have prefocused?
must she not have prefocused?
must we not have prefocused?
must you not have prefocused?
must they not have prefocused? 	must I not have been prefocusing?
must you not have been prefocusing?
must she not have been prefocusing?
must we not have been prefocusing?
must you not have been prefocusing?
must they not have been prefocusing?