can case
Regular verb: case - cased- cased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can case
you can case
he can case
we can case
you can case
they can case 	I can be casing
you can be casing
he can be casing
we can be casing
you can be casing
they can be casing	I can have cased
you can have cased
he can have cased
we can have cased
you can have cased
they can have cased	I can have been casing
you can have been casing
he can have been casing
we can have been casing
you can have been casing
they can have been casing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't case
you can't case
he can't case
we can't case
you can't case
they can't case 	I can't be casing
you can't be casing
he can't be casing
we can't be casing
you can't be casing
they can't be casing	I can't have cased
you can't have cased
he can't have cased
we can't have cased
you can't have cased
they can't have cased	I can't have been casing
you can't have been casing
he can't have been casing
we can't have been casing
you can't have been casing
they can't have been casing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I case?
can you case?
can he case?
can we case?
can you case?
can they case? 	can I be casing?
can you be casing?
can he be casing?
can we be casing?
can you be casing?
can they be casing? 	can I have cased?
can you have cased?
can he have cased?
can we have cased?
can you have cased?
can they have cased? 	can I have been casing?
can you have been casing?
can he have been casing?
can we have been casing?
can you have been casing?
can they have been casing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I case?
can't you case?
can't he case?
can't we case?
can't you case?
can't they case? 	can't I be casing?
can't you be casing?
can't he be casing?
can't we be casing?
can't you be casing?
can't they be casing? 	can't I have cased?
can't you have cased?
can't he have cased?
can't we have cased?
can't you have cased?
can't they have cased? 	can't I have been casing?
can't you have been casing?
can't he have been casing?
can't we have been casing?
can't you have been casing?
can't they have been casing?