I must power you must power he must power we must power you must power they must power
Forma con V-ing
I must be powering you must be powering he must be powering we must be powering you must be powering they must be powering
Perfecto
I must have powered you must have powered he must have powered we must have powered you must have powered they must have powered
Perfecto con V-ing
I must have been powering you must have been powering he must have been powering we must have been powering you must have been powering they must have been powering
Negación
Forma simple
I must not power you must not power he must not power we must not power you must not power they must not power
Forma con V-ing
I must not be powering you must not be powering he must not be powering we must not be powering you must not be powering they must not be powering
Perfecto
I must not have powered you must not have powered he must not have powered we must not have powered you must not have powered they must not have powered
Perfecto con V-ing
I must not have been powering you must not have been powering he must not have been powering we must not have been powering you must not have been powering they must not have been powering
Forma interrogativa
Forma simple
must I power? must you power? must he power? must we power? must you power? must they power?
Forma con V-ing
must I be powering? must you be powering? must he be powering? must we be powering? must you be powering? must they be powering?
Perfecto
must I have powered? must you have powered? must he have powered? must we have powered? must you have powered? must they have powered?
Perfecto con V-ing
must I have been powering? must you have been powering? must he have been powering? must we have been powering? must you have been powering? must they have been powering?
Forma interro-negativa
Forma simple
must I not power? must you not power? must he not power? must we not power? must you not power? must they not power?
Forma con V-ing
must I not be powering? must you not be powering? must he not be powering? must we not be powering? must you not be powering? must they not be powering?
Perfecto
must I not have powered? must you not have powered? must he not have powered? must we not have powered? must you not have powered? must they not have powered?
Perfecto con V-ing
must I not have been powering? must you not have been powering? must he not have been powering? must we not have been powering? must you not have been powering? must they not have been powering?