English verb conjugation
MUST DETRAIN

Regular verb: detrain - detrained - detrained

Affirmation

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

Negation

Simple form	V-ing form
I mustn't detrain you mustn't detrain she mustn't detrain we mustn't detrain you mustn't detrain they mustn't detrain	I mustn't be detraining you mustn't be detraining she mustn't be detraining we mustn't be detraining you mustn't be detraining they mustn't be detraining
Perfect	V-ing perfect
I mustn't have detrained you mustn't have detrained she mustn't have detrained we mustn't have detrained you mustn't have detrained they mustn't have detrained	I mustn't have been detraining you mustn't have been detraining she mustn't have been detraining we mustn't have been detraining you mustn't have been detraining they mustn't have been detraining

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I detrain? mustn't you detrain? mustn't she detrain? mustn't we detrain? mustn't you detrain? mustn't they detrain?	mustn't I be detraining? mustn't you be detraining? mustn't she be detraining? mustn't we be detraining? mustn't you be detraining? mustn't they be detraining?
Perfect	V-ing perfect
mustn't I have detrained? mustn't you have detrained? mustn't she have detrained? mustn't we have detrained? mustn't you have detrained? mustn't they have detrained?	mustn't I have been detraining? mustn't you have been detraining? mustn't she have been detraining? mustn't we have been detraining? mustn't you have been detraining? mustn't they have been detraining?