must unchain
Verbo regular: unchain - unchained- unchained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must unchain
you must unchain
he must unchain
we must unchain
you must unchain
they must unchain 	I must be unchaining
you must be unchaining
he must be unchaining
we must be unchaining
you must be unchaining
they must be unchaining	I must have unchained
you must have unchained
he must have unchained
we must have unchained
you must have unchained
they must have unchained	I must have been unchaining
you must have been unchaining
he must have been unchaining
we must have been unchaining
you must have been unchaining
they must have been unchaining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't unchain
you mustn't unchain
he mustn't unchain
we mustn't unchain
you mustn't unchain
they mustn't unchain 	I mustn't be unchaining
you mustn't be unchaining
he mustn't be unchaining
we mustn't be unchaining
you mustn't be unchaining
they mustn't be unchaining	I mustn't have unchained
you mustn't have unchained
he mustn't have unchained
we mustn't have unchained
you mustn't have unchained
they mustn't have unchained	I mustn't have been unchaining
you mustn't have been unchaining
he mustn't have been unchaining
we mustn't have been unchaining
you mustn't have been unchaining
they mustn't have been unchaining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I unchain?
must you unchain?
must he unchain?
must we unchain?
must you unchain?
must they unchain? 	must I be unchaining?
must you be unchaining?
must he be unchaining?
must we be unchaining?
must you be unchaining?
must they be unchaining? 	must I have unchained?
must you have unchained?
must he have unchained?
must we have unchained?
must you have unchained?
must they have unchained? 	must I have been unchaining?
must you have been unchaining?
must he have been unchaining?
must we have been unchaining?
must you have been unchaining?
must they have been unchaining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I unchain?
mustn't you unchain?
mustn't he unchain?
mustn't we unchain?
mustn't you unchain?
mustn't they unchain? 	mustn't I be unchaining?
mustn't you be unchaining?
mustn't he be unchaining?
mustn't we be unchaining?
mustn't you be unchaining?
mustn't they be unchaining? 	mustn't I have unchained?
mustn't you have unchained?
mustn't he have unchained?
mustn't we have unchained?
mustn't you have unchained?
mustn't they have unchained? 	mustn't I have been unchaining?
mustn't you have been unchaining?
mustn't he have been unchaining?
mustn't we have been unchaining?
mustn't you have been unchaining?
mustn't they have been unchaining?