I may crook you may crook he may crook we may crook you may crook they may crook
V-ing form
I may be crooking you may be crooking he may be crooking we may be crooking you may be crooking they may be crooking
Perfect
I may have crooked you may have crooked he may have crooked we may have crooked you may have crooked they may have crooked
V-ing perfect
I may have been crooking you may have been crooking he may have been crooking we may have been crooking you may have been crooking they may have been crooking
Negation
Simple form
I mayn't crook you mayn't crook he mayn't crook we mayn't crook you mayn't crook they mayn't crook
V-ing form
I mayn't be crooking you mayn't be crooking he mayn't be crooking we mayn't be crooking you mayn't be crooking they mayn't be crooking
Perfect
I mayn't have crooked you mayn't have crooked he mayn't have crooked we mayn't have crooked you mayn't have crooked they mayn't have crooked
V-ing perfect
I mayn't have been crooking you mayn't have been crooking he mayn't have been crooking we mayn't have been crooking you mayn't have been crooking they mayn't have been crooking
Interrogative form
Simple form
may I crook? may you crook? may he crook? may we crook? may you crook? may they crook?
V-ing form
may I be crooking? may you be crooking? may he be crooking? may we be crooking? may you be crooking? may they be crooking?
Perfect
may I have crooked? may you have crooked? may he have crooked? may we have crooked? may you have crooked? may they have crooked?
V-ing perfect
may I have been crooking? may you have been crooking? may he have been crooking? may we have been crooking? may you have been crooking? may they have been crooking?
Interro-negative form
Simple form
mayn't I crook? mayn't you crook? mayn't he crook? mayn't we crook? mayn't you crook? mayn't they crook?
V-ing form
mayn't I be crooking? mayn't you be crooking? mayn't he be crooking? mayn't we be crooking? mayn't you be crooking? mayn't they be crooking?
Perfect
mayn't I have crooked? mayn't you have crooked? mayn't he have crooked? mayn't we have crooked? mayn't you have crooked? mayn't they have crooked?
V-ing perfect
mayn't I have been crooking? mayn't you have been crooking? mayn't he have been crooking? mayn't we have been crooking? mayn't you have been crooking? mayn't they have been crooking?