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