I may corroborate you may corroborate he may corroborate we may corroborate you may corroborate they may corroborate
V-ing form
I may be corroborating you may be corroborating he may be corroborating we may be corroborating you may be corroborating they may be corroborating
Perfect
I may have corroborated you may have corroborated he may have corroborated we may have corroborated you may have corroborated they may have corroborated
V-ing perfect
I may have been corroborating you may have been corroborating he may have been corroborating we may have been corroborating you may have been corroborating they may have been corroborating
Negation
Simple form
I may not corroborate you may not corroborate he may not corroborate we may not corroborate you may not corroborate they may not corroborate
V-ing form
I may not be corroborating you may not be corroborating he may not be corroborating we may not be corroborating you may not be corroborating they may not be corroborating
Perfect
I may not have corroborated you may not have corroborated he may not have corroborated we may not have corroborated you may not have corroborated they may not have corroborated
V-ing perfect
I may not have been corroborating you may not have been corroborating he may not have been corroborating we may not have been corroborating you may not have been corroborating they may not have been corroborating
Interrogative form
Simple form
may I corroborate? may you corroborate? may he corroborate? may we corroborate? may you corroborate? may they corroborate?
V-ing form
may I be corroborating? may you be corroborating? may he be corroborating? may we be corroborating? may you be corroborating? may they be corroborating?
Perfect
may I have corroborated? may you have corroborated? may he have corroborated? may we have corroborated? may you have corroborated? may they have corroborated?
V-ing perfect
may I have been corroborating? may you have been corroborating? may he have been corroborating? may we have been corroborating? may you have been corroborating? may they have been corroborating?
Interro-negative form
Simple form
may I not corroborate? may you not corroborate? may he not corroborate? may we not corroborate? may you not corroborate? may they not corroborate?
V-ing form
may I not be corroborating? may you not be corroborating? may he not be corroborating? may we not be corroborating? may you not be corroborating? may they not be corroborating?
Perfect
may I not have corroborated? may you not have corroborated? may he not have corroborated? may we not have corroborated? may you not have corroborated? may they not have corroborated?
V-ing perfect
may I not have been corroborating? may you not have been corroborating? may he not have been corroborating? may we not have been corroborating? may you not have been corroborating? may they not have been corroborating?