I must black you must black he must black we must black you must black they must black
Forma con V-ing
I must be blacking you must be blacking he must be blacking we must be blacking you must be blacking they must be blacking
Perfecto
I must have blacked you must have blacked he must have blacked we must have blacked you must have blacked they must have blacked
Perfecto con V-ing
I must have been blacking you must have been blacking he must have been blacking we must have been blacking you must have been blacking they must have been blacking
Negación
Forma simple
I mustn't black you mustn't black he mustn't black we mustn't black you mustn't black they mustn't black
Forma con V-ing
I mustn't be blacking you mustn't be blacking he mustn't be blacking we mustn't be blacking you mustn't be blacking they mustn't be blacking
Perfecto
I mustn't have blacked you mustn't have blacked he mustn't have blacked we mustn't have blacked you mustn't have blacked they mustn't have blacked
Perfecto con V-ing
I mustn't have been blacking you mustn't have been blacking he mustn't have been blacking we mustn't have been blacking you mustn't have been blacking they mustn't have been blacking
Forma interrogativa
Forma simple
must I black? must you black? must he black? must we black? must you black? must they black?
Forma con V-ing
must I be blacking? must you be blacking? must he be blacking? must we be blacking? must you be blacking? must they be blacking?
Perfecto
must I have blacked? must you have blacked? must he have blacked? must we have blacked? must you have blacked? must they have blacked?
Perfecto con V-ing
must I have been blacking? must you have been blacking? must he have been blacking? must we have been blacking? must you have been blacking? must they have been blacking?
Forma interro-negativa
Forma simple
mustn't I black? mustn't you black? mustn't he black? mustn't we black? mustn't you black? mustn't they black?
Forma con V-ing
mustn't I be blacking? mustn't you be blacking? mustn't he be blacking? mustn't we be blacking? mustn't you be blacking? mustn't they be blacking?
Perfecto
mustn't I have blacked? mustn't you have blacked? mustn't he have blacked? mustn't we have blacked? mustn't you have blacked? mustn't they have blacked?
Perfecto con V-ing
mustn't I have been blacking? mustn't you have been blacking? mustn't he have been blacking? mustn't we have been blacking? mustn't you have been blacking? mustn't they have been blacking?