English verb conjugation
CAN CORROBORATE

Regular verb: corroborate - corroborated - corroborated

Affirmation

Simple form	V-ing form
I can corroborate you can corroborate he can corroborate we can corroborate you can corroborate they can corroborate	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	V-ing 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	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

Negation

Simple form	V-ing form
I can't corroborate you can't corroborate he can't corroborate we can't corroborate you can't corroborate they can't corroborate	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	V-ing 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	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

Interrogative form

Simple form	V-ing form
can I corroborate? can you corroborate? can he corroborate? can we corroborate? can you corroborate? can they corroborate?	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	V-ing 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?	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?

Interro-negative form

Simple form	V-ing form
can't I corroborate? can't you corroborate? can't he corroborate? can't we corroborate? can't you corroborate? can't they corroborate?	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	V-ing 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?	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?