must untruss
Verbo regular: untruss - untrussed- untrussed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must untruss
you must untruss
he must untruss
we must untruss
you must untruss
they must untruss 	I must be untrussing
you must be untrussing
he must be untrussing
we must be untrussing
you must be untrussing
they must be untrussing	I must have untrussed
you must have untrussed
he must have untrussed
we must have untrussed
you must have untrussed
they must have untrussed	I must have been untrussing
you must have been untrussing
he must have been untrussing
we must have been untrussing
you must have been untrussing
they must have been untrussing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not untruss
you must not untruss
he must not untruss
we must not untruss
you must not untruss
they must not untruss 	I must not be untrussing
you must not be untrussing
he must not be untrussing
we must not be untrussing
you must not be untrussing
they must not be untrussing	I must not have untrussed
you must not have untrussed
he must not have untrussed
we must not have untrussed
you must not have untrussed
they must not have untrussed	I must not have been untrussing
you must not have been untrussing
he must not have been untrussing
we must not have been untrussing
you must not have been untrussing
they must not have been untrussing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I untruss?
must you untruss?
must he untruss?
must we untruss?
must you untruss?
must they untruss? 	must I be untrussing?
must you be untrussing?
must he be untrussing?
must we be untrussing?
must you be untrussing?
must they be untrussing? 	must I have untrussed?
must you have untrussed?
must he have untrussed?
must we have untrussed?
must you have untrussed?
must they have untrussed? 	must I have been untrussing?
must you have been untrussing?
must he have been untrussing?
must we have been untrussing?
must you have been untrussing?
must they have been untrussing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not untruss?
must you not untruss?
must he not untruss?
must we not untruss?
must you not untruss?
must they not untruss? 	must I not be untrussing?
must you not be untrussing?
must he not be untrussing?
must we not be untrussing?
must you not be untrussing?
must they not be untrussing? 	must I not have untrussed?
must you not have untrussed?
must he not have untrussed?
must we not have untrussed?
must you not have untrussed?
must they not have untrussed? 	must I not have been untrussing?
must you not have been untrussing?
must he not have been untrussing?
must we not have been untrussing?
must you not have been untrussing?
must they not have been untrussing?