must fine-tune
Regular verb: fine-tune - fine-tuned- fine-tuned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fine-tune
you must fine-tune
he must fine-tune
we must fine-tune
you must fine-tune
they must fine-tune 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
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 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
must I fine-tune?
must you fine-tune?
must he fine-tune?
must we fine-tune?
must you fine-tune?
must they fine-tune? 	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? 	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? 	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 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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? 	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? 	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?