English verb conjugation
COULD DETRAIN

Regular verb: detrain - detrained - detrained

Affirmation

Simple form	V-ing form
I could detrain you could detrain he could detrain we could detrain you could detrain they could detrain	I could be detraining you could be detraining he could be detraining we could be detraining you could be detraining they could be detraining
Perfect	V-ing perfect
I could have detrained you could have detrained he could have detrained we could have detrained you could have detrained they could have detrained	I could have been detraining you could have been detraining he could have been detraining we could have been detraining you could have been detraining they could have been detraining

Negation

Simple form	V-ing form
I could not detrain you could not detrain he could not detrain we could not detrain you could not detrain they could not detrain	I could not be detraining you could not be detraining he could not be detraining we could not be detraining you could not be detraining they could not be detraining
Perfect	V-ing perfect
I could not have detrained you could not have detrained he could not have detrained we could not have detrained you could not have detrained they could not have detrained	I could not have been detraining you could not have been detraining he could not have been detraining we could not have been detraining you could not have been detraining they could not have been detraining

Interrogative form

Simple form	V-ing form
could I detrain? could you detrain? could he detrain? could we detrain? could you detrain? could they detrain?	could I be detraining? could you be detraining? could he be detraining? could we be detraining? could you be detraining? could they be detraining?
Perfect	V-ing perfect
could I have detrained? could you have detrained? could he have detrained? could we have detrained? could you have detrained? could they have detrained?	could I have been detraining? could you have been detraining? could he have been detraining? could we have been detraining? could you have been detraining? could they have been detraining?

Interro-negative form

Simple form	V-ing form
could I not detrain? could you not detrain? could he not detrain? could we not detrain? could you not detrain? could they not detrain?	could I not be detraining? could you not be detraining? could he not be detraining? could we not be detraining? could you not be detraining? could they not be detraining?
Perfect	V-ing perfect
could I not have detrained? could you not have detrained? could he not have detrained? could we not have detrained? could you not have detrained? could they not have detrained?	could I not have been detraining? could you not have been detraining? could he not have been detraining? could we not have been detraining? could you not have been detraining? could they not have been detraining?