Present
| I | amass |
| You | amass |
| She | amasses |
| We | amass |
| They | amass |
Past
| I | amassed |
| You | amassed |
| She | amassed |
| We | amassed |
| They | amassed |
Perfect
| I | have | amassed |
| You | have | amassed |
| She | has | amassed |
| We | have | amassed |
| They | have | amassed |
Future
| I | will | amass |
| You | will | amass |
| She | will | amass |
| We | will | amass |
| They | will | amass |
Past Perfect
| I | had | amassed |
| You | had | amassed |
| She | had | amassed |
| We | had | amassed |
| They | had | amassed |
Future Perfect
| I | will | have | amassed |
| You | will | have | amassed |
| She | will | have | amassed |
| We | will | have | amassed |
| They | will | have | amassed |
Present - Conditional
| I | would | amass |
| You | would | amass |
| She | would | amass |
| We | would | amass |
| They | would | amass |
Perfect - Conditional
| I | would | have | amassed |
| You | would | have | amassed |
| She | would | have | amassed |
| We | would | have | amassed |
| They | would | have | amassed |