could detail
Regular verb: detail - detailed- detailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could detail
you could detail
he could detail
we could detail
you could detail
they could detail 	I could be detailing
you could be detailing
he could be detailing
we could be detailing
you could be detailing
they could be detailing	I could have detailed
you could have detailed
he 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
he 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 could not detail
you could not detail
he could not detail
we could not detail
you could not detail
they could not detail 	I could not be detailing
you could not be detailing
he could not be detailing
we could not be detailing
you could not be detailing
they could not be detailing	I could not have detailed
you could not have detailed
he could not have detailed
we could not have detailed
you could not have detailed
they could not have detailed	I could not have been detailing
you could not have been detailing
he could not have been detailing
we could not have been detailing
you could not have been detailing
they could not have been detailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I detail?
could you detail?
could he detail?
could we detail?
could you detail?
could they detail? 	could I be detailing?
could you be detailing?
could he be detailing?
could we be detailing?
could you be detailing?
could they be detailing? 	could I have detailed?
could you have detailed?
could he 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 he 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 	
could I not detail?
could you not detail?
could he not detail?
could we not detail?
could you not detail?
could they not detail? 	could I not be detailing?
could you not be detailing?
could he not be detailing?
could we not be detailing?
could you not be detailing?
could they not be detailing? 	could I not have detailed?
could you not have detailed?
could he not have detailed?
could we not have detailed?
could you not have detailed?
could they not have detailed? 	could I not have been detailing?
could you not have been detailing?
could he not have been detailing?
could we not have been detailing?
could you not have been detailing?
could they not have been detailing?