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