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