I must buffer you must buffer she must buffer we must buffer you must buffer they must buffer
Forme en V-ing
I must be buffering you must be buffering she must be buffering we must be buffering you must be buffering they must be buffering
Perfect
I must have buffered you must have buffered she must have buffered we must have buffered you must have buffered they must have buffered
Perfect en V-ing
I must have been buffering you must have been buffering she must have been buffering we must have been buffering you must have been buffering they must have been buffering
Négation
Forme simple
I must not buffer you must not buffer she must not buffer we must not buffer you must not buffer they must not buffer
Forme en V-ing
I must not be buffering you must not be buffering she must not be buffering we must not be buffering you must not be buffering they must not be buffering
Perfect
I must not have buffered you must not have buffered she must not have buffered we must not have buffered you must not have buffered they must not have buffered
Perfect en V-ing
I must not have been buffering you must not have been buffering she must not have been buffering we must not have been buffering you must not have been buffering they must not have been buffering
Forme interrogative
Forme simple
must I buffer? must you buffer? must she buffer? must we buffer? must you buffer? must they buffer?
Forme en V-ing
must I be buffering? must you be buffering? must she be buffering? must we be buffering? must you be buffering? must they be buffering?
Perfect
must I have buffered? must you have buffered? must she have buffered? must we have buffered? must you have buffered? must they have buffered?
Perfect en V-ing
must I have been buffering? must you have been buffering? must she have been buffering? must we have been buffering? must you have been buffering? must they have been buffering?
Forme interro-négative
Forme simple
must I not buffer? must you not buffer? must she not buffer? must we not buffer? must you not buffer? must they not buffer?
Forme en V-ing
must I not be buffering? must you not be buffering? must she not be buffering? must we not be buffering? must you not be buffering? must they not be buffering?
Perfect
must I not have buffered? must you not have buffered? must she not have buffered? must we not have buffered? must you not have buffered? must they not have buffered?
Perfect en V-ing
must I not have been buffering? must you not have been buffering? must she not have been buffering? must we not have been buffering? must you not have been buffering? must they not have been buffering?