Regular verb: concern - concerned - concerned
Simple form | V-ing form |
I can concern you can concern she can concern we can concern you can concern they can concern | I can be concerning you can be concerning she can be concerning we can be concerning you can be concerning they can be concerning |
Perfect | V-ing perfect |
I can have concerned you can have concerned she can have concerned we can have concerned you can have concerned they can have concerned | I can have been concerning you can have been concerning she can have been concerning we can have been concerning you can have been concerning they can have been concerning |
Simple form | V-ing form |
I can't concern you can't concern she can't concern we can't concern you can't concern they can't concern | I can't be concerning you can't be concerning she can't be concerning we can't be concerning you can't be concerning they can't be concerning |
Perfect | V-ing perfect |
I can't have concerned you can't have concerned she can't have concerned we can't have concerned you can't have concerned they can't have concerned | I can't have been concerning you can't have been concerning she can't have been concerning we can't have been concerning you can't have been concerning they can't have been concerning |
Simple form | V-ing form |
can I concern? can you concern? can she concern? can we concern? can you concern? can they concern? | can I be concerning? can you be concerning? can she be concerning? can we be concerning? can you be concerning? can they be concerning? |
Perfect | V-ing perfect |
can I have concerned? can you have concerned? can she have concerned? can we have concerned? can you have concerned? can they have concerned? | can I have been concerning? can you have been concerning? can she have been concerning? can we have been concerning? can you have been concerning? can they have been concerning? |
Simple form | V-ing form |
can't I concern? can't you concern? can't she concern? can't we concern? can't you concern? can't they concern? | can't I be concerning? can't you be concerning? can't she be concerning? can't we be concerning? can't you be concerning? can't they be concerning? |
Perfect | V-ing perfect |
can't I have concerned? can't you have concerned? can't she have concerned? can't we have concerned? can't you have concerned? can't they have concerned? | can't I have been concerning? can't you have been concerning? can't she have been concerning? can't we have been concerning? can't you have been concerning? can't they have been concerning? |