must unlearn
Regular verb: unlearn - unlearned- unlearned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unlearn
you must unlearn
he must unlearn
we must unlearn
you must unlearn
they must unlearn 	I must be unlearning
you must be unlearning
he must be unlearning
we must be unlearning
you must be unlearning
they must be unlearning	I must have unlearned
you must have unlearned
he must have unlearned
we must have unlearned
you must have unlearned
they must have unlearned	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 	V-ing form 	Perfect 	V-ing perfect 	
I must not unlearn
you must not unlearn
he must not unlearn
we must not unlearn
you must not unlearn
they must not unlearn 	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	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	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 	V-ing form 	Perfect 	V-ing perfect 	
must I unlearn?
must you unlearn?
must he unlearn?
must we unlearn?
must you unlearn?
must they unlearn? 	must I be unlearning?
must you be unlearning?
must he be unlearning?
must we be unlearning?
must you be unlearning?
must they be unlearning? 	must I have unlearned?
must you have unlearned?
must he have unlearned?
must we have unlearned?
must you have unlearned?
must they have unlearned? 	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 	V-ing form 	Perfect 	V-ing perfect 	
must I not unlearn?
must you not unlearn?
must he not unlearn?
must we not unlearn?
must you not unlearn?
must they not unlearn? 	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? 	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? 	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?