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