must unfreeze
Regular verb: unfreeze - unfreezed- unfreezed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unfreeze
you must unfreeze
he must unfreeze
we must unfreeze
you must unfreeze
they must unfreeze 	I must be unfreezing
you must be unfreezing
he must be unfreezing
we must be unfreezing
you must be unfreezing
they must be unfreezing	I must have unfreezed
you must have unfreezed
he must have unfreezed
we must have unfreezed
you must have unfreezed
they must have unfreezed	I must have been unfreezing
you must have been unfreezing
he must have been unfreezing
we must have been unfreezing
you must have been unfreezing
they must have been unfreezing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't unfreeze
you mustn't unfreeze
he mustn't unfreeze
we mustn't unfreeze
you mustn't unfreeze
they mustn't unfreeze 	I mustn't be unfreezing
you mustn't be unfreezing
he mustn't be unfreezing
we mustn't be unfreezing
you mustn't be unfreezing
they mustn't be unfreezing	I mustn't have unfreezed
you mustn't have unfreezed
he mustn't have unfreezed
we mustn't have unfreezed
you mustn't have unfreezed
they mustn't have unfreezed	I mustn't have been unfreezing
you mustn't have been unfreezing
he mustn't have been unfreezing
we mustn't have been unfreezing
you mustn't have been unfreezing
they mustn't have been unfreezing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unfreeze?
must you unfreeze?
must he unfreeze?
must we unfreeze?
must you unfreeze?
must they unfreeze? 	must I be unfreezing?
must you be unfreezing?
must he be unfreezing?
must we be unfreezing?
must you be unfreezing?
must they be unfreezing? 	must I have unfreezed?
must you have unfreezed?
must he have unfreezed?
must we have unfreezed?
must you have unfreezed?
must they have unfreezed? 	must I have been unfreezing?
must you have been unfreezing?
must he have been unfreezing?
must we have been unfreezing?
must you have been unfreezing?
must they have been unfreezing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I unfreeze?
mustn't you unfreeze?
mustn't he unfreeze?
mustn't we unfreeze?
mustn't you unfreeze?
mustn't they unfreeze? 	mustn't I be unfreezing?
mustn't you be unfreezing?
mustn't he be unfreezing?
mustn't we be unfreezing?
mustn't you be unfreezing?
mustn't they be unfreezing? 	mustn't I have unfreezed?
mustn't you have unfreezed?
mustn't he have unfreezed?
mustn't we have unfreezed?
mustn't you have unfreezed?
mustn't they have unfreezed? 	mustn't I have been unfreezing?
mustn't you have been unfreezing?
mustn't he have been unfreezing?
mustn't we have been unfreezing?
mustn't you have been unfreezing?
mustn't they have been unfreezing?