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