can crouch
Regular verb: crouch - crouched- crouched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can crouch
you can crouch
he can crouch
we can crouch
you can crouch
they can crouch 	I can be crouching
you can be crouching
he can be crouching
we can be crouching
you can be crouching
they can be crouching	I can have crouched
you can have crouched
he can have crouched
we can have crouched
you can have crouched
they can have crouched	I can have been crouching
you can have been crouching
he can have been crouching
we can have been crouching
you can have been crouching
they can have been crouching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't crouch
you can't crouch
he can't crouch
we can't crouch
you can't crouch
they can't crouch 	I can't be crouching
you can't be crouching
he can't be crouching
we can't be crouching
you can't be crouching
they can't be crouching	I can't have crouched
you can't have crouched
he can't have crouched
we can't have crouched
you can't have crouched
they can't have crouched	I can't have been crouching
you can't have been crouching
he can't have been crouching
we can't have been crouching
you can't have been crouching
they can't have been crouching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I crouch?
can you crouch?
can he crouch?
can we crouch?
can you crouch?
can they crouch? 	can I be crouching?
can you be crouching?
can he be crouching?
can we be crouching?
can you be crouching?
can they be crouching? 	can I have crouched?
can you have crouched?
can he have crouched?
can we have crouched?
can you have crouched?
can they have crouched? 	can I have been crouching?
can you have been crouching?
can he have been crouching?
can we have been crouching?
can you have been crouching?
can they have been crouching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I crouch?
can't you crouch?
can't he crouch?
can't we crouch?
can't you crouch?
can't they crouch? 	can't I be crouching?
can't you be crouching?
can't he be crouching?
can't we be crouching?
can't you be crouching?
can't they be crouching? 	can't I have crouched?
can't you have crouched?
can't he have crouched?
can't we have crouched?
can't you have crouched?
can't they have crouched? 	can't I have been crouching?
can't you have been crouching?
can't he have been crouching?
can't we have been crouching?
can't you have been crouching?
can't they have been crouching?