| I | concern |
| you | concern |
| he/she/it | concerns |
| we | concern |
| you | concern |
| they | concern |
| I | have concerned |
| you | have concerned |
| he/she/it | has concerned |
| we | have concerned |
| you | have concerned |
| they | have concerned |
| I | concerned |
| you | concerned |
| he/she/it | concerned |
| we | concerned |
| you | concerned |
| they | concerned |
| I | had concerned |
| you | had concerned |
| he/she/it | had concerned |
| we | had concerned |
| you | had concerned |
| they | had concerned |
| I | will concern |
| you | will concern |
| he/she/it | will concern |
| we | will concern |
| you | will concern |
| they | will concern |
| I | will have concerned |
| you | will have concerned |
| he/she/it | will have concerned |
| we | will have concerned |
| you | will have concerned |
| they | will have concerned |
| I | am concerning |
| you | are concerning |
| he/she/it | is concerning |
| we | are concerning |
| you | are concerning |
| they | are concerning |
| I | have been concerning |
| you | have been concerning |
| he/she/it | has been concerning |
| we | have been concerning |
| you | have been concerning |
| they | have been concerning |
| I | was concerning |
| you | were concerning |
| he/she/it | was concerning |
| we | were concerning |
| you | were concerning |
| they | were concerning |
| I | had been concerning |
| you | had been concerning |
| he/she/it | had been concerning |
| we | had been concerning |
| you | had been concerning |
| they | had been concerning |
| I | will be concerning |
| you | will be concerning |
| he/she/it | will be concerning |
| we | will be concerning |
| you | will be concerning |
| they | will be concerning |
| I | will have been concerning |
| you | will have been concerning |
| he/she/it | will have been concerning |
| we | will have been concerning |
| you | will have been concerning |
| they | will have been concerning |
| I | would concern |
| you | would concern |
| he/she/it | would concern |
| we | would concern |
| you | would concern |
| they | would concern |
| I | would have concerned |
| you | would have concerned |
| he/she/it | would have concerned |
| we | would have concerned |
| you | would have concerned |
| they | would have concerned |
| I | would be concerning |
| you | would be concerning |
| he/she/it | would be concerning |
| we | would be concerning |
| you | would be concerning |
| they | would be concerning |
| I | would have been concerning |
| you | would have been concerning |
| he/she/it | would have been concerning |
| we | would have been concerning |
| you | would have been concerning |
| they | would have been concerning |
| You | concern |
| we | Let's concern |
| You | concern |