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 must not disprove you must not disprove he must not disprove we must not disprove you must not disprove they must not disprove
Forma con V-ing
I must not be disproving you must not be disproving he must not be disproving we must not be disproving you must not be disproving they must not be disproving
Perfecto
I must not have disproved you must not have disproved he must not have disproved we must not have disproved you must not have disproved they must not have disproved
Perfecto con V-ing
I must not have been disproving you must not have been disproving he must not have been disproving we must not have been disproving you must not have been disproving they must not 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
must I not disprove? must you not disprove? must he not disprove? must we not disprove? must you not disprove? must they not disprove?
Forma con V-ing
must I not be disproving? must you not be disproving? must he not be disproving? must we not be disproving? must you not be disproving? must they not be disproving?
Perfecto
must I not have disproved? must you not have disproved? must he not have disproved? must we not have disproved? must you not have disproved? must they not have disproved?
Perfecto con V-ing
must I not have been disproving? must you not have been disproving? must he not have been disproving? must we not have been disproving? must you not have been disproving? must they not have been disproving?