I must attune you must attune he must attune we must attune you must attune they must attune
V-ing form
I must be attuning you must be attuning he must be attuning we must be attuning you must be attuning they must be attuning
Perfect
I must have attuned you must have attuned he must have attuned we must have attuned you must have attuned they must have attuned
V-ing perfect
I must have been attuning you must have been attuning he must have been attuning we must have been attuning you must have been attuning they must have been attuning
Negation
Simple form
I must not attune you must not attune he must not attune we must not attune you must not attune they must not attune
V-ing form
I must not be attuning you must not be attuning he must not be attuning we must not be attuning you must not be attuning they must not be attuning
Perfect
I must not have attuned you must not have attuned he must not have attuned we must not have attuned you must not have attuned they must not have attuned
V-ing perfect
I must not have been attuning you must not have been attuning he must not have been attuning we must not have been attuning you must not have been attuning they must not have been attuning
Interrogative form
Simple form
must I attune? must you attune? must he attune? must we attune? must you attune? must they attune?
V-ing form
must I be attuning? must you be attuning? must he be attuning? must we be attuning? must you be attuning? must they be attuning?
Perfect
must I have attuned? must you have attuned? must he have attuned? must we have attuned? must you have attuned? must they have attuned?
V-ing perfect
must I have been attuning? must you have been attuning? must he have been attuning? must we have been attuning? must you have been attuning? must they have been attuning?
Interro-negative form
Simple form
must I not attune? must you not attune? must he not attune? must we not attune? must you not attune? must they not attune?
V-ing form
must I not be attuning? must you not be attuning? must he not be attuning? must we not be attuning? must you not be attuning? must they not be attuning?
Perfect
must I not have attuned? must you not have attuned? must he not have attuned? must we not have attuned? must you not have attuned? must they not have attuned?
V-ing perfect
must I not have been attuning? must you not have been attuning? must he not have been attuning? must we not have been attuning? must you not have been attuning? must they not have been attuning?