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 couldn't detrain you couldn't detrain he couldn't detrain we couldn't detrain you couldn't detrain they couldn't detrain	I couldn't be detraining you couldn't be detraining he couldn't be detraining we couldn't be detraining you couldn't be detraining they couldn't be detraining
Perfect	V-ing perfect
I couldn't have detrained you couldn't have detrained he couldn't have detrained we couldn't have detrained you couldn't have detrained they couldn't have detrained	I couldn't have been detraining you couldn't have been detraining he couldn't have been detraining we couldn't have been detraining you couldn't have been detraining they couldn't 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
couldn't I detrain? couldn't you detrain? couldn't he detrain? couldn't we detrain? couldn't you detrain? couldn't they detrain?	couldn't I be detraining? couldn't you be detraining? couldn't he be detraining? couldn't we be detraining? couldn't you be detraining? couldn't they be detraining?
Perfect	V-ing perfect
couldn't I have detrained? couldn't you have detrained? couldn't he have detrained? couldn't we have detrained? couldn't you have detrained? couldn't they have detrained?	couldn't I have been detraining? couldn't you have been detraining? couldn't he have been detraining? couldn't we have been detraining? couldn't you have been detraining? couldn't they have been detraining?