must unfold
Verbo regular: unfold - unfolded- unfolded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must unfold
you must unfold
he must unfold
we must unfold
you must unfold
they must unfold 	I must be unfolding
you must be unfolding
he must be unfolding
we must be unfolding
you must be unfolding
they must be unfolding	I must have unfolded
you must have unfolded
he must have unfolded
we must have unfolded
you must have unfolded
they must have unfolded	I must have been unfolding
you must have been unfolding
he must have been unfolding
we must have been unfolding
you must have been unfolding
they must have been unfolding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not unfold
you must not unfold
he must not unfold
we must not unfold
you must not unfold
they must not unfold 	I must not be unfolding
you must not be unfolding
he must not be unfolding
we must not be unfolding
you must not be unfolding
they must not be unfolding	I must not have unfolded
you must not have unfolded
he must not have unfolded
we must not have unfolded
you must not have unfolded
they must not have unfolded	I must not have been unfolding
you must not have been unfolding
he must not have been unfolding
we must not have been unfolding
you must not have been unfolding
they must not have been unfolding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I unfold?
must you unfold?
must he unfold?
must we unfold?
must you unfold?
must they unfold? 	must I be unfolding?
must you be unfolding?
must he be unfolding?
must we be unfolding?
must you be unfolding?
must they be unfolding? 	must I have unfolded?
must you have unfolded?
must he have unfolded?
must we have unfolded?
must you have unfolded?
must they have unfolded? 	must I have been unfolding?
must you have been unfolding?
must he have been unfolding?
must we have been unfolding?
must you have been unfolding?
must they have been unfolding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not unfold?
must you not unfold?
must he not unfold?
must we not unfold?
must you not unfold?
must they not unfold? 	must I not be unfolding?
must you not be unfolding?
must he not be unfolding?
must we not be unfolding?
must you not be unfolding?
must they not be unfolding? 	must I not have unfolded?
must you not have unfolded?
must he not have unfolded?
must we not have unfolded?
must you not have unfolded?
must they not have unfolded? 	must I not have been unfolding?
must you not have been unfolding?
must he not have been unfolding?
must we not have been unfolding?
must you not have been unfolding?
must they not have been unfolding?