I must group you must group he must group we must group you must group they must group
Forma con V-ing
I must be grouping you must be grouping he must be grouping we must be grouping you must be grouping they must be grouping
Perfecto
I must have grouped you must have grouped he must have grouped we must have grouped you must have grouped they must have grouped
Perfecto con V-ing
I must have been grouping you must have been grouping he must have been grouping we must have been grouping you must have been grouping they must have been grouping
Negación
Forma simple
I mustn't group you mustn't group he mustn't group we mustn't group you mustn't group they mustn't group
Forma con V-ing
I mustn't be grouping you mustn't be grouping he mustn't be grouping we mustn't be grouping you mustn't be grouping they mustn't be grouping
Perfecto
I mustn't have grouped you mustn't have grouped he mustn't have grouped we mustn't have grouped you mustn't have grouped they mustn't have grouped
Perfecto con V-ing
I mustn't have been grouping you mustn't have been grouping he mustn't have been grouping we mustn't have been grouping you mustn't have been grouping they mustn't have been grouping
Forma interrogativa
Forma simple
must I group? must you group? must he group? must we group? must you group? must they group?
Forma con V-ing
must I be grouping? must you be grouping? must he be grouping? must we be grouping? must you be grouping? must they be grouping?
Perfecto
must I have grouped? must you have grouped? must he have grouped? must we have grouped? must you have grouped? must they have grouped?
Perfecto con V-ing
must I have been grouping? must you have been grouping? must he have been grouping? must we have been grouping? must you have been grouping? must they have been grouping?
Forma interro-negativa
Forma simple
mustn't I group? mustn't you group? mustn't he group? mustn't we group? mustn't you group? mustn't they group?
Forma con V-ing
mustn't I be grouping? mustn't you be grouping? mustn't he be grouping? mustn't we be grouping? mustn't you be grouping? mustn't they be grouping?
Perfecto
mustn't I have grouped? mustn't you have grouped? mustn't he have grouped? mustn't we have grouped? mustn't you have grouped? mustn't they have grouped?
Perfecto con V-ing
mustn't I have been grouping? mustn't you have been grouping? mustn't he have been grouping? mustn't we have been grouping? mustn't you have been grouping? mustn't they have been grouping?