Regular verb: corroborate - corroborated - corroborated
Simple form | V-ing form |
I could corroborate you could corroborate she could corroborate we could corroborate you could corroborate they could corroborate | I could be corroborating you could be corroborating she could be corroborating we could be corroborating you could be corroborating they could be corroborating |
Perfect | V-ing perfect |
I could have corroborated you could have corroborated she could have corroborated we could have corroborated you could have corroborated they could have corroborated | I could have been corroborating you could have been corroborating she could have been corroborating we could have been corroborating you could have been corroborating they could have been corroborating |
Simple form | V-ing form |
I couldn't corroborate you couldn't corroborate she couldn't corroborate we couldn't corroborate you couldn't corroborate they couldn't corroborate | I couldn't be corroborating you couldn't be corroborating she couldn't be corroborating we couldn't be corroborating you couldn't be corroborating they couldn't be corroborating |
Perfect | V-ing perfect |
I couldn't have corroborated you couldn't have corroborated she couldn't have corroborated we couldn't have corroborated you couldn't have corroborated they couldn't have corroborated | I couldn't have been corroborating you couldn't have been corroborating she couldn't have been corroborating we couldn't have been corroborating you couldn't have been corroborating they couldn't have been corroborating |
Simple form | V-ing form |
could I corroborate? could you corroborate? could she corroborate? could we corroborate? could you corroborate? could they corroborate? | could I be corroborating? could you be corroborating? could she be corroborating? could we be corroborating? could you be corroborating? could they be corroborating? |
Perfect | V-ing perfect |
could I have corroborated? could you have corroborated? could she have corroborated? could we have corroborated? could you have corroborated? could they have corroborated? | could I have been corroborating? could you have been corroborating? could she have been corroborating? could we have been corroborating? could you have been corroborating? could they have been corroborating? |
Simple form | V-ing form |
couldn't I corroborate? couldn't you corroborate? couldn't she corroborate? couldn't we corroborate? couldn't you corroborate? couldn't they corroborate? | couldn't I be corroborating? couldn't you be corroborating? couldn't she be corroborating? couldn't we be corroborating? couldn't you be corroborating? couldn't they be corroborating? |
Perfect | V-ing perfect |
couldn't I have corroborated? couldn't you have corroborated? couldn't she have corroborated? couldn't we have corroborated? couldn't you have corroborated? couldn't they have corroborated? | couldn't I have been corroborating? couldn't you have been corroborating? couldn't she have been corroborating? couldn't we have been corroborating? couldn't you have been corroborating? couldn't they have been corroborating? |