I must bury you must bury he must bury we must bury you must bury they must bury
Forma con V-ing
I must be burying you must be burying he must be burying we must be burying you must be burying they must be burying
Perfecto
I must have buried you must have buried he must have buried we must have buried you must have buried they must have buried
Perfecto con V-ing
I must have been burying you must have been burying he must have been burying we must have been burying you must have been burying they must have been burying
Negación
Forma simple
I must not bury you must not bury he must not bury we must not bury you must not bury they must not bury
Forma con V-ing
I must not be burying you must not be burying he must not be burying we must not be burying you must not be burying they must not be burying
Perfecto
I must not have buried you must not have buried he must not have buried we must not have buried you must not have buried they must not have buried
Perfecto con V-ing
I must not have been burying you must not have been burying he must not have been burying we must not have been burying you must not have been burying they must not have been burying
Forma interrogativa
Forma simple
must I bury? must you bury? must he bury? must we bury? must you bury? must they bury?
Forma con V-ing
must I be burying? must you be burying? must he be burying? must we be burying? must you be burying? must they be burying?
Perfecto
must I have buried? must you have buried? must he have buried? must we have buried? must you have buried? must they have buried?
Perfecto con V-ing
must I have been burying? must you have been burying? must he have been burying? must we have been burying? must you have been burying? must they have been burying?
Forma interro-negativa
Forma simple
must I not bury? must you not bury? must he not bury? must we not bury? must you not bury? must they not bury?
Forma con V-ing
must I not be burying? must you not be burying? must he not be burying? must we not be burying? must you not be burying? must they not be burying?
Perfecto
must I not have buried? must you not have buried? must he not have buried? must we not have buried? must you not have buried? must they not have buried?
Perfecto con V-ing
must I not have been burying? must you not have been burying? must he not have been burying? must we not have been burying? must you not have been burying? must they not have been burying?