Present
| I | brighten |
| You | brighten |
| She | brightens |
| We | brighten |
| They | brighten |
Past
| I | brightened |
| You | brightened |
| She | brightened |
| We | brightened |
| They | brightened |
Perfect
| I | have | brightened |
| You | have | brightened |
| She | has | brightened |
| We | have | brightened |
| They | have | brightened |
Future
| I | will | brighten |
| You | will | brighten |
| She | will | brighten |
| We | will | brighten |
| They | will | brighten |
Past Perfect
| I | had | brightened |
| You | had | brightened |
| She | had | brightened |
| We | had | brightened |
| They | had | brightened |
Future Perfect
| I | will | have | brightened |
| You | will | have | brightened |
| She | will | have | brightened |
| We | will | have | brightened |
| They | will | have | brightened |
Present - Conditional
| I | would | brighten |
| You | would | brighten |
| She | would | brighten |
| We | would | brighten |
| They | would | brighten |
Perfect - Conditional
| I | would | have | brightened |
| You | would | have | brightened |
| She | would | have | brightened |
| We | would | have | brightened |
| They | would | have | brightened |