Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must impulse you must impulse he must impulse we must impulse you must impulse they must impulse
V-ing form
I must be impulsing you must be impulsing he must be impulsing we must be impulsing you must be impulsing they must be impulsing
Perfect
I must have impulsed you must have impulsed he must have impulsed we must have impulsed you must have impulsed they must have impulsed
V-ing perfect
I must have been impulsing you must have been impulsing he must have been impulsing we must have been impulsing you must have been impulsing they must have been impulsing
Negation
Simple form
I mustn't impulse you mustn't impulse he mustn't impulse we mustn't impulse you mustn't impulse they mustn't impulse
V-ing form
I mustn't be impulsing you mustn't be impulsing he mustn't be impulsing we mustn't be impulsing you mustn't be impulsing they mustn't be impulsing
Perfect
I mustn't have impulsed you mustn't have impulsed he mustn't have impulsed we mustn't have impulsed you mustn't have impulsed they mustn't have impulsed
V-ing perfect
I mustn't have been impulsing you mustn't have been impulsing he mustn't have been impulsing we mustn't have been impulsing you mustn't have been impulsing they mustn't have been impulsing
Interrogative form
Simple form
must I impulse? must you impulse? must he impulse? must we impulse? must you impulse? must they impulse?
V-ing form
must I be impulsing? must you be impulsing? must he be impulsing? must we be impulsing? must you be impulsing? must they be impulsing?
Perfect
must I have impulsed? must you have impulsed? must he have impulsed? must we have impulsed? must you have impulsed? must they have impulsed?
V-ing perfect
must I have been impulsing? must you have been impulsing? must he have been impulsing? must we have been impulsing? must you have been impulsing? must they have been impulsing?
Interro-negative form
Simple form
mustn't I impulse? mustn't you impulse? mustn't he impulse? mustn't we impulse? mustn't you impulse? mustn't they impulse?
V-ing form
mustn't I be impulsing? mustn't you be impulsing? mustn't he be impulsing? mustn't we be impulsing? mustn't you be impulsing? mustn't they be impulsing?
Perfect
mustn't I have impulsed? mustn't you have impulsed? mustn't he have impulsed? mustn't we have impulsed? mustn't you have impulsed? mustn't they have impulsed?
V-ing perfect
mustn't I have been impulsing? mustn't you have been impulsing? mustn't he have been impulsing? mustn't we have been impulsing? mustn't you have been impulsing? mustn't they have been impulsing?