English verb conjugation
COULD DETAIL

Regular verb: detail - detailed - detailed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?