I must pulse you must pulse she must pulse we must pulse you must pulse they must pulse
V-ing form
I must be pulsing you must be pulsing she must be pulsing we must be pulsing you must be pulsing they must be pulsing
Perfect
I must have pulsed you must have pulsed she must have pulsed we must have pulsed you must have pulsed they must have pulsed
V-ing perfect
I must have been pulsing you must have been pulsing she must have been pulsing we must have been pulsing you must have been pulsing they must have been pulsing
Negation
Simple form
I mustn't pulse you mustn't pulse she mustn't pulse we mustn't pulse you mustn't pulse they mustn't pulse
V-ing form
I mustn't be pulsing you mustn't be pulsing she mustn't be pulsing we mustn't be pulsing you mustn't be pulsing they mustn't be pulsing
Perfect
I mustn't have pulsed you mustn't have pulsed she mustn't have pulsed we mustn't have pulsed you mustn't have pulsed they mustn't have pulsed
V-ing perfect
I mustn't have been pulsing you mustn't have been pulsing she mustn't have been pulsing we mustn't have been pulsing you mustn't have been pulsing they mustn't have been pulsing
Interrogative form
Simple form
must I pulse? must you pulse? must she pulse? must we pulse? must you pulse? must they pulse?
V-ing form
must I be pulsing? must you be pulsing? must she be pulsing? must we be pulsing? must you be pulsing? must they be pulsing?
Perfect
must I have pulsed? must you have pulsed? must she have pulsed? must we have pulsed? must you have pulsed? must they have pulsed?
V-ing perfect
must I have been pulsing? must you have been pulsing? must she have been pulsing? must we have been pulsing? must you have been pulsing? must they have been pulsing?
Interro-negative form
Simple form
mustn't I pulse? mustn't you pulse? mustn't she pulse? mustn't we pulse? mustn't you pulse? mustn't they pulse?
V-ing form
mustn't I be pulsing? mustn't you be pulsing? mustn't she be pulsing? mustn't we be pulsing? mustn't you be pulsing? mustn't they be pulsing?
Perfect
mustn't I have pulsed? mustn't you have pulsed? mustn't she have pulsed? mustn't we have pulsed? mustn't you have pulsed? mustn't they have pulsed?
V-ing perfect
mustn't I have been pulsing? mustn't you have been pulsing? mustn't she have been pulsing? mustn't we have been pulsing? mustn't you have been pulsing? mustn't they have been pulsing?