can crook
Regular verb: crook - crooked- crooked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can crook
you can crook
he can crook
we can crook
you can crook
they can crook 	I can be crooking
you can be crooking
he can be crooking
we can be crooking
you can be crooking
they can be crooking	I can have crooked
you can have crooked
he can have crooked
we can have crooked
you can have crooked
they can have crooked	I can have been crooking
you can have been crooking
he can have been crooking
we can have been crooking
you can have been crooking
they can have been crooking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't crook
you can't crook
he can't crook
we can't crook
you can't crook
they can't crook 	I can't be crooking
you can't be crooking
he can't be crooking
we can't be crooking
you can't be crooking
they can't be crooking	I can't have crooked
you can't have crooked
he can't have crooked
we can't have crooked
you can't have crooked
they can't have crooked	I can't have been crooking
you can't have been crooking
he can't have been crooking
we can't have been crooking
you can't have been crooking
they can't have been crooking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I crook?
can you crook?
can he crook?
can we crook?
can you crook?
can they crook? 	can I be crooking?
can you be crooking?
can he be crooking?
can we be crooking?
can you be crooking?
can they be crooking? 	can I have crooked?
can you have crooked?
can he have crooked?
can we have crooked?
can you have crooked?
can they have crooked? 	can I have been crooking?
can you have been crooking?
can he have been crooking?
can we have been crooking?
can you have been crooking?
can they have been crooking? 	

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