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