English verb conjugation
COULD VOLPLANE

Regular verb: volplane - volplaned - volplaned

Affirmation

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