Present
| I | maintain |
| You | maintain |
| She | maintains |
| We | maintain |
| They | maintain |
Past
| I | maintained |
| You | maintained |
| She | maintained |
| We | maintained |
| They | maintained |
Perfect
| I | have | maintained |
| You | have | maintained |
| She | has | maintained |
| We | have | maintained |
| They | have | maintained |
Future
| I | will | maintain |
| You | will | maintain |
| She | will | maintain |
| We | will | maintain |
| They | will | maintain |
Past Perfect
| I | had | maintained |
| You | had | maintained |
| She | had | maintained |
| We | had | maintained |
| They | had | maintained |
Future Perfect
| I | will | have | maintained |
| You | will | have | maintained |
| She | will | have | maintained |
| We | will | have | maintained |
| They | will | have | maintained |
Present - Conditional
| I | would | maintain |
| You | would | maintain |
| She | would | maintain |
| We | would | maintain |
| They | would | maintain |
Perfect - Conditional
| I | would | have | maintained |
| You | would | have | maintained |
| She | would | have | maintained |
| We | would | have | maintained |
| They | would | have | maintained |