English verb conjugation
COULD ROOK

Regular verb: rook - rooked - rooked

Affirmation

Simple form	V-ing form
I could rook you could rook he could rook we could rook you could rook they could rook	I could be rooking you could be rooking he could be rooking we could be rooking you could be rooking they could be rooking
Perfect	V-ing perfect
I could have rooked you could have rooked he could have rooked we could have rooked you could have rooked they could have rooked	I could have been rooking you could have been rooking he could have been rooking we could have been rooking you could have been rooking they could have been rooking

Negation

Simple form	V-ing form
I could not rook you could not rook he could not rook we could not rook you could not rook they could not rook	I could not be rooking you could not be rooking he could not be rooking we could not be rooking you could not be rooking they could not be rooking
Perfect	V-ing perfect
I could not have rooked you could not have rooked he could not have rooked we could not have rooked you could not have rooked they could not have rooked	I could not have been rooking you could not have been rooking he could not have been rooking we could not have been rooking you could not have been rooking they could not have been rooking

Interrogative form

Simple form	V-ing form
could I rook? could you rook? could he rook? could we rook? could you rook? could they rook?	could I be rooking? could you be rooking? could he be rooking? could we be rooking? could you be rooking? could they be rooking?
Perfect	V-ing perfect
could I have rooked? could you have rooked? could he have rooked? could we have rooked? could you have rooked? could they have rooked?	could I have been rooking? could you have been rooking? could he have been rooking? could we have been rooking? could you have been rooking? could they have been rooking?

Interro-negative form

Simple form	V-ing form
could I not rook? could you not rook? could he not rook? could we not rook? could you not rook? could they not rook?	could I not be rooking? could you not be rooking? could he not be rooking? could we not be rooking? could you not be rooking? could they not be rooking?
Perfect	V-ing perfect
could I not have rooked? could you not have rooked? could he not have rooked? could we not have rooked? could you not have rooked? could they not have rooked?	could I not have been rooking? could you not have been rooking? could he not have been rooking? could we not have been rooking? could you not have been rooking? could they not have been rooking?