could delete
Regular verb: delete - deleted- deleted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could delete
you could delete
she could delete
we could delete
you could delete
they could delete 	I could be deleting
you could be deleting
she could be deleting
we could be deleting
you could be deleting
they could be deleting	I could have deleted
you could have deleted
she could have deleted
we could have deleted
you could have deleted
they could have deleted	I could have been deleting
you could have been deleting
she could have been deleting
we could have been deleting
you could have been deleting
they could have been deleting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not delete
you could not delete
she could not delete
we could not delete
you could not delete
they could not delete 	I could not be deleting
you could not be deleting
she could not be deleting
we could not be deleting
you could not be deleting
they could not be deleting	I could not have deleted
you could not have deleted
she could not have deleted
we could not have deleted
you could not have deleted
they could not have deleted	I could not have been deleting
you could not have been deleting
she could not have been deleting
we could not have been deleting
you could not have been deleting
they could not have been deleting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I delete?
could you delete?
could she delete?
could we delete?
could you delete?
could they delete? 	could I be deleting?
could you be deleting?
could she be deleting?
could we be deleting?
could you be deleting?
could they be deleting? 	could I have deleted?
could you have deleted?
could she have deleted?
could we have deleted?
could you have deleted?
could they have deleted? 	could I have been deleting?
could you have been deleting?
could she have been deleting?
could we have been deleting?
could you have been deleting?
could they have been deleting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not delete?
could you not delete?
could she not delete?
could we not delete?
could you not delete?
could they not delete? 	could I not be deleting?
could you not be deleting?
could she not be deleting?
could we not be deleting?
could you not be deleting?
could they not be deleting? 	could I not have deleted?
could you not have deleted?
could she not have deleted?
could we not have deleted?
could you not have deleted?
could they not have deleted? 	could I not have been deleting?
could you not have been deleting?
could she not have been deleting?
could we not have been deleting?
could you not have been deleting?
could they not have been deleting?