I must steamer you must steamer he must steamer we must steamer you must steamer they must steamer
Forma con V-ing
I must be steamering you must be steamering he must be steamering we must be steamering you must be steamering they must be steamering
Perfecto
I must have steamered you must have steamered he must have steamered we must have steamered you must have steamered they must have steamered
Perfecto con V-ing
I must have been steamering you must have been steamering he must have been steamering we must have been steamering you must have been steamering they must have been steamering
Negación
Forma simple
I must not steamer you must not steamer he must not steamer we must not steamer you must not steamer they must not steamer
Forma con V-ing
I must not be steamering you must not be steamering he must not be steamering we must not be steamering you must not be steamering they must not be steamering
Perfecto
I must not have steamered you must not have steamered he must not have steamered we must not have steamered you must not have steamered they must not have steamered
Perfecto con V-ing
I must not have been steamering you must not have been steamering he must not have been steamering we must not have been steamering you must not have been steamering they must not have been steamering
Forma interrogativa
Forma simple
must I steamer? must you steamer? must he steamer? must we steamer? must you steamer? must they steamer?
Forma con V-ing
must I be steamering? must you be steamering? must he be steamering? must we be steamering? must you be steamering? must they be steamering?
Perfecto
must I have steamered? must you have steamered? must he have steamered? must we have steamered? must you have steamered? must they have steamered?
Perfecto con V-ing
must I have been steamering? must you have been steamering? must he have been steamering? must we have been steamering? must you have been steamering? must they have been steamering?
Forma interro-negativa
Forma simple
must I not steamer? must you not steamer? must he not steamer? must we not steamer? must you not steamer? must they not steamer?
Forma con V-ing
must I not be steamering? must you not be steamering? must he not be steamering? must we not be steamering? must you not be steamering? must they not be steamering?
Perfecto
must I not have steamered? must you not have steamered? must he not have steamered? must we not have steamered? must you not have steamered? must they not have steamered?
Perfecto con V-ing
must I not have been steamering? must you not have been steamering? must he not have been steamering? must we not have been steamering? must you not have been steamering? must they not have been steamering?