must null
Verbo regular: null - nulled- nulled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must null
you must null
he must null
we must null
you must null
they must null 	I must be nulling
you must be nulling
he must be nulling
we must be nulling
you must be nulling
they must be nulling	I must have nulled
you must have nulled
he must have nulled
we must have nulled
you must have nulled
they must have nulled	I must have been nulling
you must have been nulling
he must have been nulling
we must have been nulling
you must have been nulling
they must have been nulling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not null
you must not null
he must not null
we must not null
you must not null
they must not null 	I must not be nulling
you must not be nulling
he must not be nulling
we must not be nulling
you must not be nulling
they must not be nulling	I must not have nulled
you must not have nulled
he must not have nulled
we must not have nulled
you must not have nulled
they must not have nulled	I must not have been nulling
you must not have been nulling
he must not have been nulling
we must not have been nulling
you must not have been nulling
they must not have been nulling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I null?
must you null?
must he null?
must we null?
must you null?
must they null? 	must I be nulling?
must you be nulling?
must he be nulling?
must we be nulling?
must you be nulling?
must they be nulling? 	must I have nulled?
must you have nulled?
must he have nulled?
must we have nulled?
must you have nulled?
must they have nulled? 	must I have been nulling?
must you have been nulling?
must he have been nulling?
must we have been nulling?
must you have been nulling?
must they have been nulling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not null?
must you not null?
must he not null?
must we not null?
must you not null?
must they not null? 	must I not be nulling?
must you not be nulling?
must he not be nulling?
must we not be nulling?
must you not be nulling?
must they not be nulling? 	must I not have nulled?
must you not have nulled?
must he not have nulled?
must we not have nulled?
must you not have nulled?
must they not have nulled? 	must I not have been nulling?
must you not have been nulling?
must he not have been nulling?
must we not have been nulling?
must you not have been nulling?
must they not have been nulling?