I must paper you must paper he must paper we must paper you must paper they must paper
Forma con V-ing
I must be papering you must be papering he must be papering we must be papering you must be papering they must be papering
Perfecto
I must have papered you must have papered he must have papered we must have papered you must have papered they must have papered
Perfecto con V-ing
I must have been papering you must have been papering he must have been papering we must have been papering you must have been papering they must have been papering
Negación
Forma simple
I must not paper you must not paper he must not paper we must not paper you must not paper they must not paper
Forma con V-ing
I must not be papering you must not be papering he must not be papering we must not be papering you must not be papering they must not be papering
Perfecto
I must not have papered you must not have papered he must not have papered we must not have papered you must not have papered they must not have papered
Perfecto con V-ing
I must not have been papering you must not have been papering he must not have been papering we must not have been papering you must not have been papering they must not have been papering
Forma interrogativa
Forma simple
must I paper? must you paper? must he paper? must we paper? must you paper? must they paper?
Forma con V-ing
must I be papering? must you be papering? must he be papering? must we be papering? must you be papering? must they be papering?
Perfecto
must I have papered? must you have papered? must he have papered? must we have papered? must you have papered? must they have papered?
Perfecto con V-ing
must I have been papering? must you have been papering? must he have been papering? must we have been papering? must you have been papering? must they have been papering?
Forma interro-negativa
Forma simple
must I not paper? must you not paper? must he not paper? must we not paper? must you not paper? must they not paper?
Forma con V-ing
must I not be papering? must you not be papering? must he not be papering? must we not be papering? must you not be papering? must they not be papering?
Perfecto
must I not have papered? must you not have papered? must he not have papered? must we not have papered? must you not have papered? must they not have papered?
Perfecto con V-ing
must I not have been papering? must you not have been papering? must he not have been papering? must we not have been papering? must you not have been papering? must they not have been papering?