I can undergo you can undergo he can undergo we can undergo you can undergo they can undergo
Forme en V-ing
I can be undergoing you can be undergoing he can be undergoing we can be undergoing you can be undergoing they can be undergoing
Perfect
I can have undergone you can have undergone he can have undergone we can have undergone you can have undergone they can have undergone
Perfect en V-ing
I can have been undergoing you can have been undergoing he can have been undergoing we can have been undergoing you can have been undergoing they can have been undergoing
Négation
Forme simple
I cannot undergo you cannot undergo he cannot undergo we cannot undergo you cannot undergo they cannot undergo
Forme en V-ing
I cannot be undergoing you cannot be undergoing he cannot be undergoing we cannot be undergoing you cannot be undergoing they cannot be undergoing
Perfect
I cannot have undergone you cannot have undergone he cannot have undergone we cannot have undergone you cannot have undergone they cannot have undergone
Perfect en V-ing
I cannot have been undergoing you cannot have been undergoing he cannot have been undergoing we cannot have been undergoing you cannot have been undergoing they cannot have been undergoing
Forme interrogative
Forme simple
can I undergo? can you undergo? can he undergo? can we undergo? can you undergo? can they undergo?
Forme en V-ing
can I be undergoing? can you be undergoing? can he be undergoing? can we be undergoing? can you be undergoing? can they be undergoing?
Perfect
can I have undergone? can you have undergone? can he have undergone? can we have undergone? can you have undergone? can they have undergone?
Perfect en V-ing
can I have been undergoing? can you have been undergoing? can he have been undergoing? can we have been undergoing? can you have been undergoing? can they have been undergoing?
Forme interro-négative
Forme simple
can I not undergo? can you not undergo? can he not undergo? can we not undergo? can you not undergo? can they not undergo?
Forme en V-ing
can I not be undergoing? can you not be undergoing? can he not be undergoing? can we not be undergoing? can you not be undergoing? can they not be undergoing?
Perfect
can I not have undergone? can you not have undergone? can he not have undergone? can we not have undergone? can you not have undergone? can they not have undergone?
Perfect en V-ing
can I not have been undergoing? can you not have been undergoing? can he not have been undergoing? can we not have been undergoing? can you not have been undergoing? can they not have been undergoing?