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