Present
| I | countersign |
| You | countersign |
| She | countersigns |
| We | countersign |
| They | countersign |
Past
| I | countersigned |
| You | countersigned |
| She | countersigned |
| We | countersigned |
| They | countersigned |
Perfect
| I | have | countersigned |
| You | have | countersigned |
| She | has | countersigned |
| We | have | countersigned |
| They | have | countersigned |
Future
| I | will | countersign |
| You | will | countersign |
| She | will | countersign |
| We | will | countersign |
| They | will | countersign |
Past Perfect
| I | had | countersigned |
| You | had | countersigned |
| She | had | countersigned |
| We | had | countersigned |
| They | had | countersigned |
Future Perfect
| I | will | have | countersigned |
| You | will | have | countersigned |
| She | will | have | countersigned |
| We | will | have | countersigned |
| They | will | have | countersigned |
Present - Conditional
| I | would | countersign |
| You | would | countersign |
| She | would | countersign |
| We | would | countersign |
| They | would | countersign |
Perfect - Conditional
| I | would | have | countersigned |
| You | would | have | countersigned |
| She | would | have | countersigned |
| We | would | have | countersigned |
| They | would | have | countersigned |