can pain
Regular verb: pain - pained- pained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can pain
you can pain
he can pain
we can pain
you can pain
they can pain 	I can be paining
you can be paining
he can be paining
we can be paining
you can be paining
they can be paining	I can have pained
you can have pained
he can have pained
we can have pained
you can have pained
they can have pained	I can have been paining
you can have been paining
he can have been paining
we can have been paining
you can have been paining
they can have been paining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't pain
you can't pain
he can't pain
we can't pain
you can't pain
they can't pain 	I can't be paining
you can't be paining
he can't be paining
we can't be paining
you can't be paining
they can't be paining	I can't have pained
you can't have pained
he can't have pained
we can't have pained
you can't have pained
they can't have pained	I can't have been paining
you can't have been paining
he can't have been paining
we can't have been paining
you can't have been paining
they can't have been paining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I pain?
can you pain?
can he pain?
can we pain?
can you pain?
can they pain? 	can I be paining?
can you be paining?
can he be paining?
can we be paining?
can you be paining?
can they be paining? 	can I have pained?
can you have pained?
can he have pained?
can we have pained?
can you have pained?
can they have pained? 	can I have been paining?
can you have been paining?
can he have been paining?
can we have been paining?
can you have been paining?
can they have been paining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I pain?
can't you pain?
can't he pain?
can't we pain?
can't you pain?
can't they pain? 	can't I be paining?
can't you be paining?
can't he be paining?
can't we be paining?
can't you be paining?
can't they be paining? 	can't I have pained?
can't you have pained?
can't he have pained?
can't we have pained?
can't you have pained?
can't they have pained? 	can't I have been paining?
can't you have been paining?
can't he have been paining?
can't we have been paining?
can't you have been paining?
can't they have been paining?