English verb conjugation
COULD PREVISION

Regular verb: prevision - previsioned - previsioned

Affirmation

Simple form	V-ing form
I could prevision you could prevision he could prevision we could prevision you could prevision they could prevision	I could be previsioning you could be previsioning he 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 he 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 he 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 he 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 he 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 he 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 he 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 he prevision? could we prevision? could you prevision? could they prevision?	could I be previsioning? could you be previsioning? could he 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 he 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 he 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 he 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 he 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 he 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 he have been previsioning? couldn't we have been previsioning? couldn't you have been previsioning? couldn't they have been previsioning?