may corroborate
Regular verb: corroborate - corroborated- corroborated

Affirmation 	
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I may corroborate
you may corroborate
she may corroborate
we may corroborate
you may corroborate
they may corroborate 	I may be corroborating
you may be corroborating
she may be corroborating
we may be corroborating
you may be corroborating
they may be corroborating	I may have corroborated
you may have corroborated
she 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
she may have been corroborating
we may have been corroborating
you may have been corroborating
they may have been corroborating	

Negation 	
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I mayn't corroborate
you mayn't corroborate
she 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
she 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
she 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
she 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 	
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may I corroborate?
may you corroborate?
may she corroborate?
may we corroborate?
may you corroborate?
may they corroborate? 	may I be corroborating?
may you be corroborating?
may she be corroborating?
may we be corroborating?
may you be corroborating?
may they be corroborating? 	may I have corroborated?
may you have corroborated?
may she 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 she have been corroborating?
may we have been corroborating?
may you have been corroborating?
may they have been corroborating? 	

Interro-negative form 	
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mayn't I corroborate?
mayn't you corroborate?
mayn't she 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 she 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 she 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 she have been corroborating?
mayn't we have been corroborating?
mayn't you have been corroborating?
mayn't they have been corroborating?