can ache
Regular verb: ache - ached- ached

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can ache
you can ache
he can ache
we can ache
you can ache
they can ache 	I can be aching
you can be aching
he can be aching
we can be aching
you can be aching
they can be aching	I can have ached
you can have ached
he can have ached
we can have ached
you can have ached
they can have ached	I can have been aching
you can have been aching
he can have been aching
we can have been aching
you can have been aching
they can have been aching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't ache
you can't ache
he can't ache
we can't ache
you can't ache
they can't ache 	I can't be aching
you can't be aching
he can't be aching
we can't be aching
you can't be aching
they can't be aching	I can't have ached
you can't have ached
he can't have ached
we can't have ached
you can't have ached
they can't have ached	I can't have been aching
you can't have been aching
he can't have been aching
we can't have been aching
you can't have been aching
they can't have been aching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I ache?
can you ache?
can he ache?
can we ache?
can you ache?
can they ache? 	can I be aching?
can you be aching?
can he be aching?
can we be aching?
can you be aching?
can they be aching? 	can I have ached?
can you have ached?
can he have ached?
can we have ached?
can you have ached?
can they have ached? 	can I have been aching?
can you have been aching?
can he have been aching?
can we have been aching?
can you have been aching?
can they have been aching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I ache?
can't you ache?
can't he ache?
can't we ache?
can't you ache?
can't they ache? 	can't I be aching?
can't you be aching?
can't he be aching?
can't we be aching?
can't you be aching?
can't they be aching? 	can't I have ached?
can't you have ached?
can't he have ached?
can't we have ached?
can't you have ached?
can't they have ached? 	can't I have been aching?
can't you have been aching?
can't he have been aching?
can't we have been aching?
can't you have been aching?
can't they have been aching?