I can corroborate you can corroborate he can corroborate we can corroborate you can corroborate they can corroborate
Forme en V-ing
I can be corroborating you can be corroborating he can be corroborating we can be corroborating you can be corroborating they can be corroborating
Perfect
I can have corroborated you can have corroborated he can have corroborated we can have corroborated you can have corroborated they can have corroborated
Perfect en V-ing
I can have been corroborating you can have been corroborating he can have been corroborating we can have been corroborating you can have been corroborating they can have been corroborating
Négation
Forme simple
I can't corroborate you can't corroborate he can't corroborate we can't corroborate you can't corroborate they can't corroborate
Forme en V-ing
I can't be corroborating you can't be corroborating he can't be corroborating we can't be corroborating you can't be corroborating they can't be corroborating
Perfect
I can't have corroborated you can't have corroborated he can't have corroborated we can't have corroborated you can't have corroborated they can't have corroborated
Perfect en V-ing
I can't have been corroborating you can't have been corroborating he can't have been corroborating we can't have been corroborating you can't have been corroborating they can't have been corroborating
Forme interrogative
Forme simple
can I corroborate? can you corroborate? can he corroborate? can we corroborate? can you corroborate? can they corroborate?
Forme en V-ing
can I be corroborating? can you be corroborating? can he be corroborating? can we be corroborating? can you be corroborating? can they be corroborating?
Perfect
can I have corroborated? can you have corroborated? can he have corroborated? can we have corroborated? can you have corroborated? can they have corroborated?
Perfect en V-ing
can I have been corroborating? can you have been corroborating? can he have been corroborating? can we have been corroborating? can you have been corroborating? can they have been corroborating?
Forme interro-négative
Forme simple
can't I corroborate? can't you corroborate? can't he corroborate? can't we corroborate? can't you corroborate? can't they corroborate?
Forme en V-ing
can't I be corroborating? can't you be corroborating? can't he be corroborating? can't we be corroborating? can't you be corroborating? can't they be corroborating?
Perfect
can't I have corroborated? can't you have corroborated? can't he have corroborated? can't we have corroborated? can't you have corroborated? can't they have corroborated?
Perfect en V-ing
can't I have been corroborating? can't you have been corroborating? can't he have been corroborating? can't we have been corroborating? can't you have been corroborating? can't they have been corroborating?