must unfreeze
Verbo regular: unfreeze - unfreezed- unfreezed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not unfreeze
you must not unfreeze
he must not unfreeze
we must not unfreeze
you must not unfreeze
they must not unfreeze 	I must not be unfreezing
you must not be unfreezing
he must not be unfreezing
we must not be unfreezing
you must not be unfreezing
they must not be unfreezing	I must not have unfreezed
you must not have unfreezed
he must not have unfreezed
we must not have unfreezed
you must not have unfreezed
they must not have unfreezed	I must not have been unfreezing
you must not have been unfreezing
he must not have been unfreezing
we must not have been unfreezing
you must not have been unfreezing
they must not have been unfreezing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not unfreeze?
must you not unfreeze?
must he not unfreeze?
must we not unfreeze?
must you not unfreeze?
must they not unfreeze? 	must I not be unfreezing?
must you not be unfreezing?
must he not be unfreezing?
must we not be unfreezing?
must you not be unfreezing?
must they not be unfreezing? 	must I not have unfreezed?
must you not have unfreezed?
must he not have unfreezed?
must we not have unfreezed?
must you not have unfreezed?
must they not have unfreezed? 	must I not have been unfreezing?
must you not have been unfreezing?
must he not have been unfreezing?
must we not have been unfreezing?
must you not have been unfreezing?
must they not have been unfreezing?