English verb conjugation
COULD CROOK

Regular verb: crook - crooked - crooked

Affirmation

Simple form	V-ing form
I could crook you could crook she could crook we could crook you could crook they could crook	I could be crooking you could be crooking she could be crooking we could be crooking you could be crooking they could be crooking
Perfect	V-ing perfect
I could have crooked you could have crooked she could have crooked we could have crooked you could have crooked they could have crooked	I could have been crooking you could have been crooking she could have been crooking we could have been crooking you could have been crooking they could have been crooking

Negation

Simple form	V-ing form
I could not crook you could not crook she could not crook we could not crook you could not crook they could not crook	I could not be crooking you could not be crooking she could not be crooking we could not be crooking you could not be crooking they could not be crooking
Perfect	V-ing perfect
I could not have crooked you could not have crooked she could not have crooked we could not have crooked you could not have crooked they could not have crooked	I could not have been crooking you could not have been crooking she could not have been crooking we could not have been crooking you could not have been crooking they could not have been crooking

Interrogative form

Simple form	V-ing form
could I crook? could you crook? could she crook? could we crook? could you crook? could they crook?	could I be crooking? could you be crooking? could she be crooking? could we be crooking? could you be crooking? could they be crooking?
Perfect	V-ing perfect
could I have crooked? could you have crooked? could she have crooked? could we have crooked? could you have crooked? could they have crooked?	could I have been crooking? could you have been crooking? could she have been crooking? could we have been crooking? could you have been crooking? could they have been crooking?

Interro-negative form

Simple form	V-ing form
could I not crook? could you not crook? could she not crook? could we not crook? could you not crook? could they not crook?	could I not be crooking? could you not be crooking? could she not be crooking? could we not be crooking? could you not be crooking? could they not be crooking?
Perfect	V-ing perfect
could I not have crooked? could you not have crooked? could she not have crooked? could we not have crooked? could you not have crooked? could they not have crooked?	could I not have been crooking? could you not have been crooking? could she not have been crooking? could we not have been crooking? could you not have been crooking? could they not have been crooking?