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