I must buffer you must buffer he must buffer we must buffer you must buffer they must buffer
Forma con V-ing
I must be buffering you must be buffering he must be buffering we must be buffering you must be buffering they must be buffering
Perfecto
I must have buffered you must have buffered he must have buffered we must have buffered you must have buffered they must have buffered
Perfecto con V-ing
I must have been buffering you must have been buffering he must have been buffering we must have been buffering you must have been buffering they must have been buffering
Negación
Forma simple
I must not buffer you must not buffer he must not buffer we must not buffer you must not buffer they must not buffer
Forma con V-ing
I must not be buffering you must not be buffering he must not be buffering we must not be buffering you must not be buffering they must not be buffering
Perfecto
I must not have buffered you must not have buffered he must not have buffered we must not have buffered you must not have buffered they must not have buffered
Perfecto con V-ing
I must not have been buffering you must not have been buffering he must not have been buffering we must not have been buffering you must not have been buffering they must not have been buffering
Forma interrogativa
Forma simple
must I buffer? must you buffer? must he buffer? must we buffer? must you buffer? must they buffer?
Forma con V-ing
must I be buffering? must you be buffering? must he be buffering? must we be buffering? must you be buffering? must they be buffering?
Perfecto
must I have buffered? must you have buffered? must he have buffered? must we have buffered? must you have buffered? must they have buffered?
Perfecto con V-ing
must I have been buffering? must you have been buffering? must he have been buffering? must we have been buffering? must you have been buffering? must they have been buffering?
Forma interro-negativa
Forma simple
must I not buffer? must you not buffer? must he not buffer? must we not buffer? must you not buffer? must they not buffer?
Forma con V-ing
must I not be buffering? must you not be buffering? must he not be buffering? must we not be buffering? must you not be buffering? must they not be buffering?
Perfecto
must I not have buffered? must you not have buffered? must he not have buffered? must we not have buffered? must you not have buffered? must they not have buffered?
Perfecto con V-ing
must I not have been buffering? must you not have been buffering? must he not have been buffering? must we not have been buffering? must you not have been buffering? must they not have been buffering?