I must stun you must stun he must stun we must stun you must stun they must stun
V-ing form
I must be stunning you must be stunning he must be stunning we must be stunning you must be stunning they must be stunning
Perfect
I must have stunned you must have stunned he must have stunned we must have stunned you must have stunned they must have stunned
V-ing perfect
I must have been stunning you must have been stunning he must have been stunning we must have been stunning you must have been stunning they must have been stunning
Negation
Simple form
I must not stun you must not stun he must not stun we must not stun you must not stun they must not stun
V-ing form
I must not be stunning you must not be stunning he must not be stunning we must not be stunning you must not be stunning they must not be stunning
Perfect
I must not have stunned you must not have stunned he must not have stunned we must not have stunned you must not have stunned they must not have stunned
V-ing perfect
I must not have been stunning you must not have been stunning he must not have been stunning we must not have been stunning you must not have been stunning they must not have been stunning
Interrogative form
Simple form
must I stun? must you stun? must he stun? must we stun? must you stun? must they stun?
V-ing form
must I be stunning? must you be stunning? must he be stunning? must we be stunning? must you be stunning? must they be stunning?
Perfect
must I have stunned? must you have stunned? must he have stunned? must we have stunned? must you have stunned? must they have stunned?
V-ing perfect
must I have been stunning? must you have been stunning? must he have been stunning? must we have been stunning? must you have been stunning? must they have been stunning?
Interro-negative form
Simple form
must I not stun? must you not stun? must he not stun? must we not stun? must you not stun? must they not stun?
V-ing form
must I not be stunning? must you not be stunning? must he not be stunning? must we not be stunning? must you not be stunning? must they not be stunning?
Perfect
must I not have stunned? must you not have stunned? must he not have stunned? must we not have stunned? must you not have stunned? must they not have stunned?
V-ing perfect
must I not have been stunning? must you not have been stunning? must he not have been stunning? must we not have been stunning? must you not have been stunning? must they not have been stunning?