must neuter
Verbo regular: neuter - neutered- neutered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must neuter
you must neuter
he must neuter
we must neuter
you must neuter
they must neuter 	I must be neutering
you must be neutering
he must be neutering
we must be neutering
you must be neutering
they must be neutering	I must have neutered
you must have neutered
he must have neutered
we must have neutered
you must have neutered
they must have neutered	I must have been neutering
you must have been neutering
he must have been neutering
we must have been neutering
you must have been neutering
they must have been neutering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not neuter
you must not neuter
he must not neuter
we must not neuter
you must not neuter
they must not neuter 	I must not be neutering
you must not be neutering
he must not be neutering
we must not be neutering
you must not be neutering
they must not be neutering	I must not have neutered
you must not have neutered
he must not have neutered
we must not have neutered
you must not have neutered
they must not have neutered	I must not have been neutering
you must not have been neutering
he must not have been neutering
we must not have been neutering
you must not have been neutering
they must not have been neutering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I neuter?
must you neuter?
must he neuter?
must we neuter?
must you neuter?
must they neuter? 	must I be neutering?
must you be neutering?
must he be neutering?
must we be neutering?
must you be neutering?
must they be neutering? 	must I have neutered?
must you have neutered?
must he have neutered?
must we have neutered?
must you have neutered?
must they have neutered? 	must I have been neutering?
must you have been neutering?
must he have been neutering?
must we have been neutering?
must you have been neutering?
must they have been neutering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not neuter?
must you not neuter?
must he not neuter?
must we not neuter?
must you not neuter?
must they not neuter? 	must I not be neutering?
must you not be neutering?
must he not be neutering?
must we not be neutering?
must you not be neutering?
must they not be neutering? 	must I not have neutered?
must you not have neutered?
must he not have neutered?
must we not have neutered?
must you not have neutered?
must they not have neutered? 	must I not have been neutering?
must you not have been neutering?
must he not have been neutering?
must we not have been neutering?
must you not have been neutering?
must they not have been neutering?