I must fine-tune you must fine-tune he must fine-tune we must fine-tune you must fine-tune they must fine-tune
V-ing form
I must be fine-tuning you must be fine-tuning he must be fine-tuning we must be fine-tuning you must be fine-tuning they must be fine-tuning
Perfect
I must have fine-tuned you must have fine-tuned he must have fine-tuned we must have fine-tuned you must have fine-tuned they must have fine-tuned
V-ing perfect
I must have been fine-tuning you must have been fine-tuning he must have been fine-tuning we must have been fine-tuning you must have been fine-tuning they must have been fine-tuning
Negation
Simple form
I mustn't fine-tune you mustn't fine-tune he mustn't fine-tune we mustn't fine-tune you mustn't fine-tune they mustn't fine-tune
V-ing form
I mustn't be fine-tuning you mustn't be fine-tuning he mustn't be fine-tuning we mustn't be fine-tuning you mustn't be fine-tuning they mustn't be fine-tuning
Perfect
I mustn't have fine-tuned you mustn't have fine-tuned he mustn't have fine-tuned we mustn't have fine-tuned you mustn't have fine-tuned they mustn't have fine-tuned
V-ing perfect
I mustn't have been fine-tuning you mustn't have been fine-tuning he mustn't have been fine-tuning we mustn't have been fine-tuning you mustn't have been fine-tuning they mustn't have been fine-tuning
Interrogative form
Simple form
must I fine-tune? must you fine-tune? must he fine-tune? must we fine-tune? must you fine-tune? must they fine-tune?
V-ing form
must I be fine-tuning? must you be fine-tuning? must he be fine-tuning? must we be fine-tuning? must you be fine-tuning? must they be fine-tuning?
Perfect
must I have fine-tuned? must you have fine-tuned? must he have fine-tuned? must we have fine-tuned? must you have fine-tuned? must they have fine-tuned?
V-ing perfect
must I have been fine-tuning? must you have been fine-tuning? must he have been fine-tuning? must we have been fine-tuning? must you have been fine-tuning? must they have been fine-tuning?
Interro-negative form
Simple form
mustn't I fine-tune? mustn't you fine-tune? mustn't he fine-tune? mustn't we fine-tune? mustn't you fine-tune? mustn't they fine-tune?
V-ing form
mustn't I be fine-tuning? mustn't you be fine-tuning? mustn't he be fine-tuning? mustn't we be fine-tuning? mustn't you be fine-tuning? mustn't they be fine-tuning?
Perfect
mustn't I have fine-tuned? mustn't you have fine-tuned? mustn't he have fine-tuned? mustn't we have fine-tuned? mustn't you have fine-tuned? mustn't they have fine-tuned?
V-ing perfect
mustn't I have been fine-tuning? mustn't you have been fine-tuning? mustn't he have been fine-tuning? mustn't we have been fine-tuning? mustn't you have been fine-tuning? mustn't they have been fine-tuning?