I must prompt you must prompt he must prompt we must prompt you must prompt they must prompt
V-ing form
I must be prompting you must be prompting he must be prompting we must be prompting you must be prompting they must be prompting
Perfect
I must have prompted you must have prompted he must have prompted we must have prompted you must have prompted they must have prompted
V-ing perfect
I must have been prompting you must have been prompting he must have been prompting we must have been prompting you must have been prompting they must have been prompting
Negation
Simple form
I must not prompt you must not prompt he must not prompt we must not prompt you must not prompt they must not prompt
V-ing form
I must not be prompting you must not be prompting he must not be prompting we must not be prompting you must not be prompting they must not be prompting
Perfect
I must not have prompted you must not have prompted he must not have prompted we must not have prompted you must not have prompted they must not have prompted
V-ing perfect
I must not have been prompting you must not have been prompting he must not have been prompting we must not have been prompting you must not have been prompting they must not have been prompting
Interrogative form
Simple form
must I prompt? must you prompt? must he prompt? must we prompt? must you prompt? must they prompt?
V-ing form
must I be prompting? must you be prompting? must he be prompting? must we be prompting? must you be prompting? must they be prompting?
Perfect
must I have prompted? must you have prompted? must he have prompted? must we have prompted? must you have prompted? must they have prompted?
V-ing perfect
must I have been prompting? must you have been prompting? must he have been prompting? must we have been prompting? must you have been prompting? must they have been prompting?
Interro-negative form
Simple form
must I not prompt? must you not prompt? must he not prompt? must we not prompt? must you not prompt? must they not prompt?
V-ing form
must I not be prompting? must you not be prompting? must he not be prompting? must we not be prompting? must you not be prompting? must they not be prompting?
Perfect
must I not have prompted? must you not have prompted? must he not have prompted? must we not have prompted? must you not have prompted? must they not have prompted?
V-ing perfect
must I not have been prompting? must you not have been prompting? must he not have been prompting? must we not have been prompting? must you not have been prompting? must they not have been prompting?