must discuss
Verbo regular: discuss - discussed- discussed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must discuss
you must discuss
she must discuss
we must discuss
you must discuss
they must discuss 	I must be discussing
you must be discussing
she must be discussing
we must be discussing
you must be discussing
they must be discussing	I must have discussed
you must have discussed
she must have discussed
we must have discussed
you must have discussed
they must have discussed	I must have been discussing
you must have been discussing
she must have been discussing
we must have been discussing
you must have been discussing
they must have been discussing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't discuss
you mustn't discuss
she mustn't discuss
we mustn't discuss
you mustn't discuss
they mustn't discuss 	I mustn't be discussing
you mustn't be discussing
she mustn't be discussing
we mustn't be discussing
you mustn't be discussing
they mustn't be discussing	I mustn't have discussed
you mustn't have discussed
she mustn't have discussed
we mustn't have discussed
you mustn't have discussed
they mustn't have discussed	I mustn't have been discussing
you mustn't have been discussing
she mustn't have been discussing
we mustn't have been discussing
you mustn't have been discussing
they mustn't have been discussing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I discuss?
must you discuss?
must she discuss?
must we discuss?
must you discuss?
must they discuss? 	must I be discussing?
must you be discussing?
must she be discussing?
must we be discussing?
must you be discussing?
must they be discussing? 	must I have discussed?
must you have discussed?
must she have discussed?
must we have discussed?
must you have discussed?
must they have discussed? 	must I have been discussing?
must you have been discussing?
must she have been discussing?
must we have been discussing?
must you have been discussing?
must they have been discussing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I discuss?
mustn't you discuss?
mustn't she discuss?
mustn't we discuss?
mustn't you discuss?
mustn't they discuss? 	mustn't I be discussing?
mustn't you be discussing?
mustn't she be discussing?
mustn't we be discussing?
mustn't you be discussing?
mustn't they be discussing? 	mustn't I have discussed?
mustn't you have discussed?
mustn't she have discussed?
mustn't we have discussed?
mustn't you have discussed?
mustn't they have discussed? 	mustn't I have been discussing?
mustn't you have been discussing?
mustn't she have been discussing?
mustn't we have been discussing?
mustn't you have been discussing?
mustn't they have been discussing?