could detail
Regular verb: detail - detailed- detailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could detail
you could detail
she could detail
we could detail
you could detail
they could detail 	I could be detailing
you could be detailing
she could be detailing
we could be detailing
you could be detailing
they could be detailing	I could have detailed
you could have detailed
she could have detailed
we could have detailed
you could have detailed
they could have detailed	I could have been detailing
you could have been detailing
she could have been detailing
we could have been detailing
you could have been detailing
they could have been detailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't detail
you couldn't detail
she couldn't detail
we couldn't detail
you couldn't detail
they couldn't detail 	I couldn't be detailing
you couldn't be detailing
she couldn't be detailing
we couldn't be detailing
you couldn't be detailing
they couldn't be detailing	I couldn't have detailed
you couldn't have detailed
she couldn't have detailed
we couldn't have detailed
you couldn't have detailed
they couldn't have detailed	I couldn't have been detailing
you couldn't have been detailing
she couldn't have been detailing
we couldn't have been detailing
you couldn't have been detailing
they couldn't have been detailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I detail?
could you detail?
could she detail?
could we detail?
could you detail?
could they detail? 	could I be detailing?
could you be detailing?
could she be detailing?
could we be detailing?
could you be detailing?
could they be detailing? 	could I have detailed?
could you have detailed?
could she have detailed?
could we have detailed?
could you have detailed?
could they have detailed? 	could I have been detailing?
could you have been detailing?
could she have been detailing?
could we have been detailing?
could you have been detailing?
could they have been detailing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I detail?
couldn't you detail?
couldn't she detail?
couldn't we detail?
couldn't you detail?
couldn't they detail? 	couldn't I be detailing?
couldn't you be detailing?
couldn't she be detailing?
couldn't we be detailing?
couldn't you be detailing?
couldn't they be detailing? 	couldn't I have detailed?
couldn't you have detailed?
couldn't she have detailed?
couldn't we have detailed?
couldn't you have detailed?
couldn't they have detailed? 	couldn't I have been detailing?
couldn't you have been detailing?
couldn't she have been detailing?
couldn't we have been detailing?
couldn't you have been detailing?
couldn't they have been detailing?