must prevision
Verbo regular: prevision - previsioned- previsioned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must prevision
you must prevision
he must prevision
we must prevision
you must prevision
they must prevision 	I must be previsioning
you must be previsioning
he must be previsioning
we must be previsioning
you must be previsioning
they must be previsioning	I must have previsioned
you must have previsioned
he must have previsioned
we must have previsioned
you must have previsioned
they must have previsioned	I must have been previsioning
you must have been previsioning
he must have been previsioning
we must have been previsioning
you must have been previsioning
they must have been previsioning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not prevision
you must not prevision
he must not prevision
we must not prevision
you must not prevision
they must not prevision 	I must not be previsioning
you must not be previsioning
he must not be previsioning
we must not be previsioning
you must not be previsioning
they must not be previsioning	I must not have previsioned
you must not have previsioned
he must not have previsioned
we must not have previsioned
you must not have previsioned
they must not have previsioned	I must not have been previsioning
you must not have been previsioning
he must not have been previsioning
we must not have been previsioning
you must not have been previsioning
they must not have been previsioning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I prevision?
must you prevision?
must he prevision?
must we prevision?
must you prevision?
must they prevision? 	must I be previsioning?
must you be previsioning?
must he be previsioning?
must we be previsioning?
must you be previsioning?
must they be previsioning? 	must I have previsioned?
must you have previsioned?
must he have previsioned?
must we have previsioned?
must you have previsioned?
must they have previsioned? 	must I have been previsioning?
must you have been previsioning?
must he have been previsioning?
must we have been previsioning?
must you have been previsioning?
must they have been previsioning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not prevision?
must you not prevision?
must he not prevision?
must we not prevision?
must you not prevision?
must they not prevision? 	must I not be previsioning?
must you not be previsioning?
must he not be previsioning?
must we not be previsioning?
must you not be previsioning?
must they not be previsioning? 	must I not have previsioned?
must you not have previsioned?
must he not have previsioned?
must we not have previsioned?
must you not have previsioned?
must they not have previsioned? 	must I not have been previsioning?
must you not have been previsioning?
must he not have been previsioning?
must we not have been previsioning?
must you not have been previsioning?
must they not have been previsioning?