I should crook you should crook he should crook we should crook you should crook they should crook
V-ing form
I should be crooking you should be crooking he should be crooking we should be crooking you should be crooking they should be crooking
Perfect
I should have crooked you should have crooked he should have crooked we should have crooked you should have crooked they should have crooked
V-ing perfect
I should have been crooking you should have been crooking he should have been crooking we should have been crooking you should have been crooking they should have been crooking
Negation
Simple form
I should not crook you should not crook he should not crook we should not crook you should not crook they should not crook
V-ing form
I should not be crooking you should not be crooking he should not be crooking we should not be crooking you should not be crooking they should not be crooking
Perfect
I should not have crooked you should not have crooked he should not have crooked we should not have crooked you should not have crooked they should not have crooked
V-ing perfect
I should not have been crooking you should not have been crooking he should not have been crooking we should not have been crooking you should not have been crooking they should not have been crooking
Interrogative form
Simple form
should I crook? should you crook? should he crook? should we crook? should you crook? should they crook?
V-ing form
should I be crooking? should you be crooking? should he be crooking? should we be crooking? should you be crooking? should they be crooking?
Perfect
should I have crooked? should you have crooked? should he have crooked? should we have crooked? should you have crooked? should they have crooked?
V-ing perfect
should I have been crooking? should you have been crooking? should he have been crooking? should we have been crooking? should you have been crooking? should they have been crooking?
Interro-negative form
Simple form
should I not crook? should you not crook? should he not crook? should we not crook? should you not crook? should they not crook?
V-ing form
should I not be crooking? should you not be crooking? should he not be crooking? should we not be crooking? should you not be crooking? should they not be crooking?
Perfect
should I not have crooked? should you not have crooked? should he not have crooked? should we not have crooked? should you not have crooked? should they not have crooked?
V-ing perfect
should I not have been crooking? should you not have been crooking? should he not have been crooking? should we not have been crooking? should you not have been crooking? should they not have been crooking?