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