I must bay you must bay he must bay we must bay you must bay they must bay
Forma con V-ing
I must be baying you must be baying he must be baying we must be baying you must be baying they must be baying
Perfecto
I must have bayed you must have bayed he must have bayed we must have bayed you must have bayed they must have bayed
Perfecto con V-ing
I must have been baying you must have been baying he must have been baying we must have been baying you must have been baying they must have been baying
Negación
Forma simple
I must not bay you must not bay he must not bay we must not bay you must not bay they must not bay
Forma con V-ing
I must not be baying you must not be baying he must not be baying we must not be baying you must not be baying they must not be baying
Perfecto
I must not have bayed you must not have bayed he must not have bayed we must not have bayed you must not have bayed they must not have bayed
Perfecto con V-ing
I must not have been baying you must not have been baying he must not have been baying we must not have been baying you must not have been baying they must not have been baying
Forma interrogativa
Forma simple
must I bay? must you bay? must he bay? must we bay? must you bay? must they bay?
Forma con V-ing
must I be baying? must you be baying? must he be baying? must we be baying? must you be baying? must they be baying?
Perfecto
must I have bayed? must you have bayed? must he have bayed? must we have bayed? must you have bayed? must they have bayed?
Perfecto con V-ing
must I have been baying? must you have been baying? must he have been baying? must we have been baying? must you have been baying? must they have been baying?
Forma interro-negativa
Forma simple
must I not bay? must you not bay? must he not bay? must we not bay? must you not bay? must they not bay?
Forma con V-ing
must I not be baying? must you not be baying? must he not be baying? must we not be baying? must you not be baying? must they not be baying?
Perfecto
must I not have bayed? must you not have bayed? must he not have bayed? must we not have bayed? must you not have bayed? must they not have bayed?
Perfecto con V-ing
must I not have been baying? must you not have been baying? must he not have been baying? must we not have been baying? must you not have been baying? must they not have been baying?