Present
| I | unfasten |
| You | unfasten |
| She | unfastens |
| We | unfasten |
| They | unfasten |
Past
| I | unfastened |
| You | unfastened |
| She | unfastened |
| We | unfastened |
| They | unfastened |
Perfect
| I | have | unfastened |
| You | have | unfastened |
| She | has | unfastened |
| We | have | unfastened |
| They | have | unfastened |
Future
| I | will | unfasten |
| You | will | unfasten |
| She | will | unfasten |
| We | will | unfasten |
| They | will | unfasten |
Past Perfect
| I | had | unfastened |
| You | had | unfastened |
| She | had | unfastened |
| We | had | unfastened |
| They | had | unfastened |
Future Perfect
| I | will | have | unfastened |
| You | will | have | unfastened |
| She | will | have | unfastened |
| We | will | have | unfastened |
| They | will | have | unfastened |
Present - Conditional
| I | would | unfasten |
| You | would | unfasten |
| She | would | unfasten |
| We | would | unfasten |
| They | would | unfasten |
Perfect - Conditional
| I | would | have | unfastened |
| You | would | have | unfastened |
| She | would | have | unfastened |
| We | would | have | unfastened |
| They | would | have | unfastened |