must preattune
Regular verb: preattune - preattuned- preattuned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must preattune
you must preattune
he must preattune
we must preattune
you must preattune
they must preattune 	I must be preattuning
you must be preattuning
he must be preattuning
we must be preattuning
you must be preattuning
they must be preattuning	I must have preattuned
you must have preattuned
he must have preattuned
we must have preattuned
you must have preattuned
they must have preattuned	I must have been preattuning
you must have been preattuning
he must have been preattuning
we must have been preattuning
you must have been preattuning
they must have been preattuning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not preattune
you must not preattune
he must not preattune
we must not preattune
you must not preattune
they must not preattune 	I must not be preattuning
you must not be preattuning
he must not be preattuning
we must not be preattuning
you must not be preattuning
they must not be preattuning	I must not have preattuned
you must not have preattuned
he must not have preattuned
we must not have preattuned
you must not have preattuned
they must not have preattuned	I must not have been preattuning
you must not have been preattuning
he must not have been preattuning
we must not have been preattuning
you must not have been preattuning
they must not have been preattuning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I preattune?
must you preattune?
must he preattune?
must we preattune?
must you preattune?
must they preattune? 	must I be preattuning?
must you be preattuning?
must he be preattuning?
must we be preattuning?
must you be preattuning?
must they be preattuning? 	must I have preattuned?
must you have preattuned?
must he have preattuned?
must we have preattuned?
must you have preattuned?
must they have preattuned? 	must I have been preattuning?
must you have been preattuning?
must he have been preattuning?
must we have been preattuning?
must you have been preattuning?
must they have been preattuning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not preattune?
must you not preattune?
must he not preattune?
must we not preattune?
must you not preattune?
must they not preattune? 	must I not be preattuning?
must you not be preattuning?
must he not be preattuning?
must we not be preattuning?
must you not be preattuning?
must they not be preattuning? 	must I not have preattuned?
must you not have preattuned?
must he not have preattuned?
must we not have preattuned?
must you not have preattuned?
must they not have preattuned? 	must I not have been preattuning?
must you not have been preattuning?
must he not have been preattuning?
must we not have been preattuning?
must you not have been preattuning?
must they not have been preattuning?