English verb conjugation
MUST DETRAIN

Regular verb: detrain - detrained - detrained

Affirmation

Simple form	V-ing form
I must detrain you must detrain he must detrain we must detrain you must detrain they must detrain	I must be detraining you must be detraining he 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 he 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 he 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 he 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 he 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 he 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 he 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 he detrain? must we detrain? must you detrain? must they detrain?	must I be detraining? must you be detraining? must he 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 he 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 he 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 he 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 he 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 he 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 he have been detraining? mustn't we have been detraining? mustn't you have been detraining? mustn't they have been detraining?