I must appoint you must appoint he must appoint we must appoint you must appoint they must appoint
V-ing form
I must be appointing you must be appointing he must be appointing we must be appointing you must be appointing they must be appointing
Perfect
I must have appointed you must have appointed he must have appointed we must have appointed you must have appointed they must have appointed
V-ing perfect
I must have been appointing you must have been appointing he must have been appointing we must have been appointing you must have been appointing they must have been appointing
Negation
Simple form
I mustn't appoint you mustn't appoint he mustn't appoint we mustn't appoint you mustn't appoint they mustn't appoint
V-ing form
I mustn't be appointing you mustn't be appointing he mustn't be appointing we mustn't be appointing you mustn't be appointing they mustn't be appointing
Perfect
I mustn't have appointed you mustn't have appointed he mustn't have appointed we mustn't have appointed you mustn't have appointed they mustn't have appointed
V-ing perfect
I mustn't have been appointing you mustn't have been appointing he mustn't have been appointing we mustn't have been appointing you mustn't have been appointing they mustn't have been appointing
Interrogative form
Simple form
must I appoint? must you appoint? must he appoint? must we appoint? must you appoint? must they appoint?
V-ing form
must I be appointing? must you be appointing? must he be appointing? must we be appointing? must you be appointing? must they be appointing?
Perfect
must I have appointed? must you have appointed? must he have appointed? must we have appointed? must you have appointed? must they have appointed?
V-ing perfect
must I have been appointing? must you have been appointing? must he have been appointing? must we have been appointing? must you have been appointing? must they have been appointing?
Interro-negative form
Simple form
mustn't I appoint? mustn't you appoint? mustn't he appoint? mustn't we appoint? mustn't you appoint? mustn't they appoint?
V-ing form
mustn't I be appointing? mustn't you be appointing? mustn't he be appointing? mustn't we be appointing? mustn't you be appointing? mustn't they be appointing?
Perfect
mustn't I have appointed? mustn't you have appointed? mustn't he have appointed? mustn't we have appointed? mustn't you have appointed? mustn't they have appointed?
V-ing perfect
mustn't I have been appointing? mustn't you have been appointing? mustn't he have been appointing? mustn't we have been appointing? mustn't you have been appointing? mustn't they have been appointing?