Present
| I | back |
| You | back |
| She | backs |
| We | back |
| They | back |
Past
| I | backed |
| You | backed |
| She | backed |
| We | backed |
| They | backed |
Perfect
| I | have | backed |
| You | have | backed |
| She | has | backed |
| We | have | backed |
| They | have | backed |
Future
| I | will | back |
| You | will | back |
| She | will | back |
| We | will | back |
| They | will | back |
Past Perfect
| I | had | backed |
| You | had | backed |
| She | had | backed |
| We | had | backed |
| They | had | backed |
Future Perfect
| I | will | have | backed |
| You | will | have | backed |
| She | will | have | backed |
| We | will | have | backed |
| They | will | have | backed |
Present - Conditional
| I | would | back |
| You | would | back |
| She | would | back |
| We | would | back |
| They | would | back |
Perfect - Conditional
| I | would | have | backed |
| You | would | have | backed |
| She | would | have | backed |
| We | would | have | backed |
| They | would | have | backed |