English verb conjugation
SHOULD CORROBORATE

Regular verb: corroborate - corroborated - corroborated

Affirmation

Simple form	V-ing form
I should corroborate you should corroborate he should corroborate we should corroborate you should corroborate they should corroborate	I should be corroborating you should be corroborating he should be corroborating we should be corroborating you should be corroborating they should be corroborating
Perfect	V-ing perfect
I should have corroborated you should have corroborated he should have corroborated we should have corroborated you should have corroborated they should have corroborated	I should have been corroborating you should have been corroborating he should have been corroborating we should have been corroborating you should have been corroborating they should have been corroborating

Negation

Simple form	V-ing form
I should not corroborate you should not corroborate he should not corroborate we should not corroborate you should not corroborate they should not corroborate	I should not be corroborating you should not be corroborating he should not be corroborating we should not be corroborating you should not be corroborating they should not be corroborating
Perfect	V-ing perfect
I should not have corroborated you should not have corroborated he should not have corroborated we should not have corroborated you should not have corroborated they should not have corroborated	I should not have been corroborating you should not have been corroborating he should not have been corroborating we should not have been corroborating you should not have been corroborating they should not have been corroborating

Interrogative form

Simple form	V-ing form
should I corroborate? should you corroborate? should he corroborate? should we corroborate? should you corroborate? should they corroborate?	should I be corroborating? should you be corroborating? should he be corroborating? should we be corroborating? should you be corroborating? should they be corroborating?
Perfect	V-ing perfect
should I have corroborated? should you have corroborated? should he have corroborated? should we have corroborated? should you have corroborated? should they have corroborated?	should I have been corroborating? should you have been corroborating? should he have been corroborating? should we have been corroborating? should you have been corroborating? should they have been corroborating?

Interro-negative form

Simple form	V-ing form
should I not corroborate? should you not corroborate? should he not corroborate? should we not corroborate? should you not corroborate? should they not corroborate?	should I not be corroborating? should you not be corroborating? should he not be corroborating? should we not be corroborating? should you not be corroborating? should they not be corroborating?
Perfect	V-ing perfect
should I not have corroborated? should you not have corroborated? should he not have corroborated? should we not have corroborated? should you not have corroborated? should they not have corroborated?	should I not have been corroborating? should you not have been corroborating? should he not have been corroborating? should we not have been corroborating? should you not have been corroborating? should they not have been corroborating?