English verb conjugation
COULD VOLPLANE

Regular verb: volplane - volplaned - volplaned

Affirmation

Simple form	V-ing form
I could volplane you could volplane she could volplane we could volplane you could volplane they could volplane	I could be volplaning you could be volplaning she could be volplaning we could be volplaning you could be volplaning they could be volplaning
Perfect	V-ing perfect
I could have volplaned you could have volplaned she could have volplaned we could have volplaned you could have volplaned they could have volplaned	I could have been volplaning you could have been volplaning she could have been volplaning we could have been volplaning you could have been volplaning they could have been volplaning

Negation

Simple form	V-ing form
I couldn't volplane you couldn't volplane she couldn't volplane we couldn't volplane you couldn't volplane they couldn't volplane	I couldn't be volplaning you couldn't be volplaning she couldn't be volplaning we couldn't be volplaning you couldn't be volplaning they couldn't be volplaning
Perfect	V-ing perfect
I couldn't have volplaned you couldn't have volplaned she couldn't have volplaned we couldn't have volplaned you couldn't have volplaned they couldn't have volplaned	I couldn't have been volplaning you couldn't have been volplaning she couldn't have been volplaning we couldn't have been volplaning you couldn't have been volplaning they couldn't have been volplaning

Interrogative form

Simple form	V-ing form
could I volplane? could you volplane? could she volplane? could we volplane? could you volplane? could they volplane?	could I be volplaning? could you be volplaning? could she be volplaning? could we be volplaning? could you be volplaning? could they be volplaning?
Perfect	V-ing perfect
could I have volplaned? could you have volplaned? could she have volplaned? could we have volplaned? could you have volplaned? could they have volplaned?	could I have been volplaning? could you have been volplaning? could she have been volplaning? could we have been volplaning? could you have been volplaning? could they have been volplaning?

Interro-negative form

Simple form	V-ing form
couldn't I volplane? couldn't you volplane? couldn't she volplane? couldn't we volplane? couldn't you volplane? couldn't they volplane?	couldn't I be volplaning? couldn't you be volplaning? couldn't she be volplaning? couldn't we be volplaning? couldn't you be volplaning? couldn't they be volplaning?
Perfect	V-ing perfect
couldn't I have volplaned? couldn't you have volplaned? couldn't she have volplaned? couldn't we have volplaned? couldn't you have volplaned? couldn't they have volplaned?	couldn't I have been volplaning? couldn't you have been volplaning? couldn't she have been volplaning? couldn't we have been volplaning? couldn't you have been volplaning? couldn't they have been volplaning?