English verb conjugation
COULD PREVISION

Regular verb: prevision - previsioned - previsioned

Affirmation

Simple form	V-ing form
I could prevision you could prevision she could prevision we could prevision you could prevision they could prevision	I could be previsioning you could be previsioning she could be previsioning we could be previsioning you could be previsioning they could be previsioning
Perfect	V-ing perfect
I could have previsioned you could have previsioned she could have previsioned we could have previsioned you could have previsioned they could have previsioned	I could have been previsioning you could have been previsioning she could have been previsioning we could have been previsioning you could have been previsioning they could have been previsioning

Negation

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

Interrogative form

Simple form	V-ing form
could I prevision? could you prevision? could she prevision? could we prevision? could you prevision? could they prevision?	could I be previsioning? could you be previsioning? could she be previsioning? could we be previsioning? could you be previsioning? could they be previsioning?
Perfect	V-ing perfect
could I have previsioned? could you have previsioned? could she have previsioned? could we have previsioned? could you have previsioned? could they have previsioned?	could I have been previsioning? could you have been previsioning? could she have been previsioning? could we have been previsioning? could you have been previsioning? could they have been previsioning?

Interro-negative form

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