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