I must unlearn you must unlearn he must unlearn we must unlearn you must unlearn they must unlearn
V-ing form
I must be unlearning you must be unlearning he must be unlearning we must be unlearning you must be unlearning they must be unlearning
Perfect
I must have unlearned you must have unlearned he must have unlearned we must have unlearned you must have unlearned they must have unlearned
V-ing perfect
I must have been unlearning you must have been unlearning he must have been unlearning we must have been unlearning you must have been unlearning they must have been unlearning
Negation
Simple form
I must not unlearn you must not unlearn he must not unlearn we must not unlearn you must not unlearn they must not unlearn
V-ing form
I must not be unlearning you must not be unlearning he must not be unlearning we must not be unlearning you must not be unlearning they must not be unlearning
Perfect
I must not have unlearned you must not have unlearned he must not have unlearned we must not have unlearned you must not have unlearned they must not have unlearned
V-ing perfect
I must not have been unlearning you must not have been unlearning he must not have been unlearning we must not have been unlearning you must not have been unlearning they must not have been unlearning
Interrogative form
Simple form
must I unlearn? must you unlearn? must he unlearn? must we unlearn? must you unlearn? must they unlearn?
V-ing form
must I be unlearning? must you be unlearning? must he be unlearning? must we be unlearning? must you be unlearning? must they be unlearning?
Perfect
must I have unlearned? must you have unlearned? must he have unlearned? must we have unlearned? must you have unlearned? must they have unlearned?
V-ing perfect
must I have been unlearning? must you have been unlearning? must he have been unlearning? must we have been unlearning? must you have been unlearning? must they have been unlearning?
Interro-negative form
Simple form
must I not unlearn? must you not unlearn? must he not unlearn? must we not unlearn? must you not unlearn? must they not unlearn?
V-ing form
must I not be unlearning? must you not be unlearning? must he not be unlearning? must we not be unlearning? must you not be unlearning? must they not be unlearning?
Perfect
must I not have unlearned? must you not have unlearned? must he not have unlearned? must we not have unlearned? must you not have unlearned? must they not have unlearned?
V-ing perfect
must I not have been unlearning? must you not have been unlearning? must he not have been unlearning? must we not have been unlearning? must you not have been unlearning? must they not have been unlearning?