can end
Regular verb: end - ended- ended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can end
you can end
he can end
we can end
you can end
they can end 	I can be ending
you can be ending
he can be ending
we can be ending
you can be ending
they can be ending	I can have ended
you can have ended
he can have ended
we can have ended
you can have ended
they can have ended	I can have been ending
you can have been ending
he can have been ending
we can have been ending
you can have been ending
they can have been ending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't end
you can't end
he can't end
we can't end
you can't end
they can't end 	I can't be ending
you can't be ending
he can't be ending
we can't be ending
you can't be ending
they can't be ending	I can't have ended
you can't have ended
he can't have ended
we can't have ended
you can't have ended
they can't have ended	I can't have been ending
you can't have been ending
he can't have been ending
we can't have been ending
you can't have been ending
they can't have been ending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I end?
can you end?
can he end?
can we end?
can you end?
can they end? 	can I be ending?
can you be ending?
can he be ending?
can we be ending?
can you be ending?
can they be ending? 	can I have ended?
can you have ended?
can he have ended?
can we have ended?
can you have ended?
can they have ended? 	can I have been ending?
can you have been ending?
can he have been ending?
can we have been ending?
can you have been ending?
can they have been ending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I end?
can't you end?
can't he end?
can't we end?
can't you end?
can't they end? 	can't I be ending?
can't you be ending?
can't he be ending?
can't we be ending?
can't you be ending?
can't they be ending? 	can't I have ended?
can't you have ended?
can't he have ended?
can't we have ended?
can't you have ended?
can't they have ended? 	can't I have been ending?
can't you have been ending?
can't he have been ending?
can't we have been ending?
can't you have been ending?
can't they have been ending?