must staple
Verbo regular: staple - stapled- stapled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must staple
you must staple
he must staple
we must staple
you must staple
they must staple 	I must be stapling
you must be stapling
he must be stapling
we must be stapling
you must be stapling
they must be stapling	I must have stapled
you must have stapled
he must have stapled
we must have stapled
you must have stapled
they must have stapled	I must have been stapling
you must have been stapling
he must have been stapling
we must have been stapling
you must have been stapling
they must have been stapling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not staple
you must not staple
he must not staple
we must not staple
you must not staple
they must not staple 	I must not be stapling
you must not be stapling
he must not be stapling
we must not be stapling
you must not be stapling
they must not be stapling	I must not have stapled
you must not have stapled
he must not have stapled
we must not have stapled
you must not have stapled
they must not have stapled	I must not have been stapling
you must not have been stapling
he must not have been stapling
we must not have been stapling
you must not have been stapling
they must not have been stapling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I staple?
must you staple?
must he staple?
must we staple?
must you staple?
must they staple? 	must I be stapling?
must you be stapling?
must he be stapling?
must we be stapling?
must you be stapling?
must they be stapling? 	must I have stapled?
must you have stapled?
must he have stapled?
must we have stapled?
must you have stapled?
must they have stapled? 	must I have been stapling?
must you have been stapling?
must he have been stapling?
must we have been stapling?
must you have been stapling?
must they have been stapling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not staple?
must you not staple?
must he not staple?
must we not staple?
must you not staple?
must they not staple? 	must I not be stapling?
must you not be stapling?
must he not be stapling?
must we not be stapling?
must you not be stapling?
must they not be stapling? 	must I not have stapled?
must you not have stapled?
must he not have stapled?
must we not have stapled?
must you not have stapled?
must they not have stapled? 	must I not have been stapling?
must you not have been stapling?
must he not have been stapling?
must we not have been stapling?
must you not have been stapling?
must they not have been stapling?