must extract
Verbo regular: extract - extracted- extracted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must extract
you must extract
he must extract
we must extract
you must extract
they must extract 	I must be extracting
you must be extracting
he must be extracting
we must be extracting
you must be extracting
they must be extracting	I must have extracted
you must have extracted
he must have extracted
we must have extracted
you must have extracted
they must have extracted	I must have been extracting
you must have been extracting
he must have been extracting
we must have been extracting
you must have been extracting
they must have been extracting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not extract
you must not extract
he must not extract
we must not extract
you must not extract
they must not extract 	I must not be extracting
you must not be extracting
he must not be extracting
we must not be extracting
you must not be extracting
they must not be extracting	I must not have extracted
you must not have extracted
he must not have extracted
we must not have extracted
you must not have extracted
they must not have extracted	I must not have been extracting
you must not have been extracting
he must not have been extracting
we must not have been extracting
you must not have been extracting
they must not have been extracting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I extract?
must you extract?
must he extract?
must we extract?
must you extract?
must they extract? 	must I be extracting?
must you be extracting?
must he be extracting?
must we be extracting?
must you be extracting?
must they be extracting? 	must I have extracted?
must you have extracted?
must he have extracted?
must we have extracted?
must you have extracted?
must they have extracted? 	must I have been extracting?
must you have been extracting?
must he have been extracting?
must we have been extracting?
must you have been extracting?
must they have been extracting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not extract?
must you not extract?
must he not extract?
must we not extract?
must you not extract?
must they not extract? 	must I not be extracting?
must you not be extracting?
must he not be extracting?
must we not be extracting?
must you not be extracting?
must they not be extracting? 	must I not have extracted?
must you not have extracted?
must he not have extracted?
must we not have extracted?
must you not have extracted?
must they not have extracted? 	must I not have been extracting?
must you not have been extracting?
must he not have been extracting?
must we not have been extracting?
must you not have been extracting?
must they not have been extracting?