English verb conjugation
COULD PAN

Regular verb: pan - panned - panned

Affirmation

Simple form	V-ing form
I could pan you could pan she could pan we could pan you could pan they could pan	I could be panning you could be panning she could be panning we could be panning you could be panning they could be panning
Perfect	V-ing perfect
I could have panned you could have panned she could have panned we could have panned you could have panned they could have panned	I could have been panning you could have been panning she could have been panning we could have been panning you could have been panning they could have been panning

Negation

Simple form	V-ing form
I couldn't pan you couldn't pan she couldn't pan we couldn't pan you couldn't pan they couldn't pan	I couldn't be panning you couldn't be panning she couldn't be panning we couldn't be panning you couldn't be panning they couldn't be panning
Perfect	V-ing perfect
I couldn't have panned you couldn't have panned she couldn't have panned we couldn't have panned you couldn't have panned they couldn't have panned	I couldn't have been panning you couldn't have been panning she couldn't have been panning we couldn't have been panning you couldn't have been panning they couldn't have been panning

Interrogative form

Simple form	V-ing form
could I pan? could you pan? could she pan? could we pan? could you pan? could they pan?	could I be panning? could you be panning? could she be panning? could we be panning? could you be panning? could they be panning?
Perfect	V-ing perfect
could I have panned? could you have panned? could she have panned? could we have panned? could you have panned? could they have panned?	could I have been panning? could you have been panning? could she have been panning? could we have been panning? could you have been panning? could they have been panning?

Interro-negative form

Simple form	V-ing form
couldn't I pan? couldn't you pan? couldn't she pan? couldn't we pan? couldn't you pan? couldn't they pan?	couldn't I be panning? couldn't you be panning? couldn't she be panning? couldn't we be panning? couldn't you be panning? couldn't they be panning?
Perfect	V-ing perfect
couldn't I have panned? couldn't you have panned? couldn't she have panned? couldn't we have panned? couldn't you have panned? couldn't they have panned?	couldn't I have been panning? couldn't you have been panning? couldn't she have been panning? couldn't we have been panning? couldn't you have been panning? couldn't they have been panning?