may corroborate
Regular verb: corroborate - corroborated- corroborated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may corroborate
you may corroborate
he may corroborate
we may corroborate
you may corroborate
they may corroborate 	I may be corroborating
you may be corroborating
he may be corroborating
we may be corroborating
you may be corroborating
they may be corroborating	I may have corroborated
you may have corroborated
he may have corroborated
we may have corroborated
you may have corroborated
they may have corroborated	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 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't corroborate
you mayn't corroborate
he mayn't corroborate
we mayn't corroborate
you mayn't corroborate
they mayn't corroborate 	I mayn't be corroborating
you mayn't be corroborating
he mayn't be corroborating
we mayn't be corroborating
you mayn't be corroborating
they mayn't be corroborating	I mayn't have corroborated
you mayn't have corroborated
he mayn't have corroborated
we mayn't have corroborated
you mayn't have corroborated
they mayn't have corroborated	I mayn't have been corroborating
you mayn't have been corroborating
he mayn't have been corroborating
we mayn't have been corroborating
you mayn't have been corroborating
they mayn't have been corroborating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I corroborate?
may you corroborate?
may he corroborate?
may we corroborate?
may you corroborate?
may they corroborate? 	may I be corroborating?
may you be corroborating?
may he be corroborating?
may we be corroborating?
may you be corroborating?
may they be corroborating? 	may I have corroborated?
may you have corroborated?
may he have corroborated?
may we have corroborated?
may you have corroborated?
may they have corroborated? 	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 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I corroborate?
mayn't you corroborate?
mayn't he corroborate?
mayn't we corroborate?
mayn't you corroborate?
mayn't they corroborate? 	mayn't I be corroborating?
mayn't you be corroborating?
mayn't he be corroborating?
mayn't we be corroborating?
mayn't you be corroborating?
mayn't they be corroborating? 	mayn't I have corroborated?
mayn't you have corroborated?
mayn't he have corroborated?
mayn't we have corroborated?
mayn't you have corroborated?
mayn't they have corroborated? 	mayn't I have been corroborating?
mayn't you have been corroborating?
mayn't he have been corroborating?
mayn't we have been corroborating?
mayn't you have been corroborating?
mayn't they have been corroborating?