I must audit you must audit she must audit we must audit you must audit they must audit
V-ing form
I must be auditing you must be auditing she must be auditing we must be auditing you must be auditing they must be auditing
Perfect
I must have audited you must have audited she 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 she 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 she 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 she 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 she 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 she 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 she audit? must we audit? must you audit? must they audit?
V-ing form
must I be auditing? must you be auditing? must she be auditing? must we be auditing? must you be auditing? must they be auditing?
Perfect
must I have audited? must you have audited? must she 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 she 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 she 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 she 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 she 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 she have been auditing? mustn't we have been auditing? mustn't you have been auditing? mustn't they have been auditing?