English verb conjugation
COULD DETAIL

Regular verb: detail - detailed - detailed

Affirmation

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