Present
| I | decrease |
| You | decrease |
| She | decreases |
| We | decrease |
| They | decrease |
Past
| I | decreased |
| You | decreased |
| She | decreased |
| We | decreased |
| They | decreased |
Perfect
| I | have | decreased |
| You | have | decreased |
| She | has | decreased |
| We | have | decreased |
| They | have | decreased |
Future
| I | will | decrease |
| You | will | decrease |
| She | will | decrease |
| We | will | decrease |
| They | will | decrease |
Past Perfect
| I | had | decreased |
| You | had | decreased |
| She | had | decreased |
| We | had | decreased |
| They | had | decreased |
Future Perfect
| I | will | have | decreased |
| You | will | have | decreased |
| She | will | have | decreased |
| We | will | have | decreased |
| They | will | have | decreased |
Present - Conditional
| I | would | decrease |
| You | would | decrease |
| She | would | decrease |
| We | would | decrease |
| They | would | decrease |
Perfect - Conditional
| I | would | have | decreased |
| You | would | have | decreased |
| She | would | have | decreased |
| We | would | have | decreased |
| They | would | have | decreased |