English verb conjugation
COULD QUICKSILVER

Regular verb: quicksilver - quicksilvered - quicksilvered

Affirmation

Simple form	V-ing form
I could quicksilver you could quicksilver he could quicksilver we could quicksilver you could quicksilver they could quicksilver	I could be quicksilvering you could be quicksilvering he could be quicksilvering we could be quicksilvering you could be quicksilvering they could be quicksilvering
Perfect	V-ing perfect
I could have quicksilvered you could have quicksilvered he could have quicksilvered we could have quicksilvered you could have quicksilvered they could have quicksilvered	I could have been quicksilvering you could have been quicksilvering he could have been quicksilvering we could have been quicksilvering you could have been quicksilvering they could have been quicksilvering

Negation

Simple form	V-ing form
I could not quicksilver you could not quicksilver he could not quicksilver we could not quicksilver you could not quicksilver they could not quicksilver	I could not be quicksilvering you could not be quicksilvering he could not be quicksilvering we could not be quicksilvering you could not be quicksilvering they could not be quicksilvering
Perfect	V-ing perfect
I could not have quicksilvered you could not have quicksilvered he could not have quicksilvered we could not have quicksilvered you could not have quicksilvered they could not have quicksilvered	I could not have been quicksilvering you could not have been quicksilvering he could not have been quicksilvering we could not have been quicksilvering you could not have been quicksilvering they could not have been quicksilvering

Interrogative form

Simple form	V-ing form
could I quicksilver? could you quicksilver? could he quicksilver? could we quicksilver? could you quicksilver? could they quicksilver?	could I be quicksilvering? could you be quicksilvering? could he be quicksilvering? could we be quicksilvering? could you be quicksilvering? could they be quicksilvering?
Perfect	V-ing perfect
could I have quicksilvered? could you have quicksilvered? could he have quicksilvered? could we have quicksilvered? could you have quicksilvered? could they have quicksilvered?	could I have been quicksilvering? could you have been quicksilvering? could he have been quicksilvering? could we have been quicksilvering? could you have been quicksilvering? could they have been quicksilvering?

Interro-negative form

Simple form	V-ing form
could I not quicksilver? could you not quicksilver? could he not quicksilver? could we not quicksilver? could you not quicksilver? could they not quicksilver?	could I not be quicksilvering? could you not be quicksilvering? could he not be quicksilvering? could we not be quicksilvering? could you not be quicksilvering? could they not be quicksilvering?
Perfect	V-ing perfect
could I not have quicksilvered? could you not have quicksilvered? could he not have quicksilvered? could we not have quicksilvered? could you not have quicksilvered? could they not have quicksilvered?	could I not have been quicksilvering? could you not have been quicksilvering? could he not have been quicksilvering? could we not have been quicksilvering? could you not have been quicksilvering? could they not have been quicksilvering?