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 couldn't rook you couldn't rook he couldn't rook we couldn't rook you couldn't rook they couldn't rook	I couldn't be rooking you couldn't be rooking he couldn't be rooking we couldn't be rooking you couldn't be rooking they couldn't be rooking
Perfect	V-ing perfect
I couldn't have rooked you couldn't have rooked he couldn't have rooked we couldn't have rooked you couldn't have rooked they couldn't have rooked	I couldn't have been rooking you couldn't have been rooking he couldn't have been rooking we couldn't have been rooking you couldn't have been rooking they couldn't 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
couldn't I rook? couldn't you rook? couldn't he rook? couldn't we rook? couldn't you rook? couldn't they rook?	couldn't I be rooking? couldn't you be rooking? couldn't he be rooking? couldn't we be rooking? couldn't you be rooking? couldn't they be rooking?
Perfect	V-ing perfect
couldn't I have rooked? couldn't you have rooked? couldn't he have rooked? couldn't we have rooked? couldn't you have rooked? couldn't they have rooked?	couldn't I have been rooking? couldn't you have been rooking? couldn't he have been rooking? couldn't we have been rooking? couldn't you have been rooking? couldn't they have been rooking?