must unclasp
Verbo regular: unclasp - unclasped- unclasped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must unclasp
you must unclasp
he must unclasp
we must unclasp
you must unclasp
they must unclasp 	I must be unclasping
you must be unclasping
he must be unclasping
we must be unclasping
you must be unclasping
they must be unclasping	I must have unclasped
you must have unclasped
he must have unclasped
we must have unclasped
you must have unclasped
they must have unclasped	I must have been unclasping
you must have been unclasping
he must have been unclasping
we must have been unclasping
you must have been unclasping
they must have been unclasping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not unclasp
you must not unclasp
he must not unclasp
we must not unclasp
you must not unclasp
they must not unclasp 	I must not be unclasping
you must not be unclasping
he must not be unclasping
we must not be unclasping
you must not be unclasping
they must not be unclasping	I must not have unclasped
you must not have unclasped
he must not have unclasped
we must not have unclasped
you must not have unclasped
they must not have unclasped	I must not have been unclasping
you must not have been unclasping
he must not have been unclasping
we must not have been unclasping
you must not have been unclasping
they must not have been unclasping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I unclasp?
must you unclasp?
must he unclasp?
must we unclasp?
must you unclasp?
must they unclasp? 	must I be unclasping?
must you be unclasping?
must he be unclasping?
must we be unclasping?
must you be unclasping?
must they be unclasping? 	must I have unclasped?
must you have unclasped?
must he have unclasped?
must we have unclasped?
must you have unclasped?
must they have unclasped? 	must I have been unclasping?
must you have been unclasping?
must he have been unclasping?
must we have been unclasping?
must you have been unclasping?
must they have been unclasping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not unclasp?
must you not unclasp?
must he not unclasp?
must we not unclasp?
must you not unclasp?
must they not unclasp? 	must I not be unclasping?
must you not be unclasping?
must he not be unclasping?
must we not be unclasping?
must you not be unclasping?
must they not be unclasping? 	must I not have unclasped?
must you not have unclasped?
must he not have unclasped?
must we not have unclasped?
must you not have unclasped?
must they not have unclasped? 	must I not have been unclasping?
must you not have been unclasping?
must he not have been unclasping?
must we not have been unclasping?
must you not have been unclasping?
must they not have been unclasping?