I must coal you must coal she must coal we must coal you must coal they must coal
Forma con V-ing
I must be coaling you must be coaling she must be coaling we must be coaling you must be coaling they must be coaling
Perfecto
I must have coaled you must have coaled she must have coaled we must have coaled you must have coaled they must have coaled
Perfecto con V-ing
I must have been coaling you must have been coaling she must have been coaling we must have been coaling you must have been coaling they must have been coaling
Negación
Forma simple
I mustn't coal you mustn't coal she mustn't coal we mustn't coal you mustn't coal they mustn't coal
Forma con V-ing
I mustn't be coaling you mustn't be coaling she mustn't be coaling we mustn't be coaling you mustn't be coaling they mustn't be coaling
Perfecto
I mustn't have coaled you mustn't have coaled she mustn't have coaled we mustn't have coaled you mustn't have coaled they mustn't have coaled
Perfecto con V-ing
I mustn't have been coaling you mustn't have been coaling she mustn't have been coaling we mustn't have been coaling you mustn't have been coaling they mustn't have been coaling
Forma interrogativa
Forma simple
must I coal? must you coal? must she coal? must we coal? must you coal? must they coal?
Forma con V-ing
must I be coaling? must you be coaling? must she be coaling? must we be coaling? must you be coaling? must they be coaling?
Perfecto
must I have coaled? must you have coaled? must she have coaled? must we have coaled? must you have coaled? must they have coaled?
Perfecto con V-ing
must I have been coaling? must you have been coaling? must she have been coaling? must we have been coaling? must you have been coaling? must they have been coaling?
Forma interro-negativa
Forma simple
mustn't I coal? mustn't you coal? mustn't she coal? mustn't we coal? mustn't you coal? mustn't they coal?
Forma con V-ing
mustn't I be coaling? mustn't you be coaling? mustn't she be coaling? mustn't we be coaling? mustn't you be coaling? mustn't they be coaling?
Perfecto
mustn't I have coaled? mustn't you have coaled? mustn't she have coaled? mustn't we have coaled? mustn't you have coaled? mustn't they have coaled?
Perfecto con V-ing
mustn't I have been coaling? mustn't you have been coaling? mustn't she have been coaling? mustn't we have been coaling? mustn't you have been coaling? mustn't they have been coaling?