English verb conjugation
MUST PREVISION

Regular verb: prevision - previsioned - previsioned

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
I mustn't prevision you mustn't prevision he mustn't prevision we mustn't prevision you mustn't prevision they mustn't prevision	I mustn't be previsioning you mustn't be previsioning he mustn't be previsioning we mustn't be previsioning you mustn't be previsioning they mustn't be previsioning
Perfect	V-ing perfect
I mustn't have previsioned you mustn't have previsioned he mustn't have previsioned we mustn't have previsioned you mustn't have previsioned they mustn't have previsioned	I mustn't have been previsioning you mustn't have been previsioning he mustn't have been previsioning we mustn't have been previsioning you mustn't have been previsioning they mustn't have been previsioning

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
mustn't I prevision? mustn't you prevision? mustn't he prevision? mustn't we prevision? mustn't you prevision? mustn't they prevision?	mustn't I be previsioning? mustn't you be previsioning? mustn't he be previsioning? mustn't we be previsioning? mustn't you be previsioning? mustn't they be previsioning?
Perfect	V-ing perfect
mustn't I have previsioned? mustn't you have previsioned? mustn't he have previsioned? mustn't we have previsioned? mustn't you have previsioned? mustn't they have previsioned?	mustn't I have been previsioning? mustn't you have been previsioning? mustn't he have been previsioning? mustn't we have been previsioning? mustn't you have been previsioning? mustn't they have been previsioning?