Present
| I | stem |
| You | stem |
| She | stems |
| We | stem |
| They | stem |
Past
| I | stemmed |
| You | stemmed |
| She | stemmed |
| We | stemmed |
| They | stemmed |
Perfect
| I | have | stemmed |
| You | have | stemmed |
| She | has | stemmed |
| We | have | stemmed |
| They | have | stemmed |
Future
| I | will | stem |
| You | will | stem |
| She | will | stem |
| We | will | stem |
| They | will | stem |
Past Perfect
| I | had | stemmed |
| You | had | stemmed |
| She | had | stemmed |
| We | had | stemmed |
| They | had | stemmed |
Future Perfect
| I | will | have | stemmed |
| You | will | have | stemmed |
| She | will | have | stemmed |
| We | will | have | stemmed |
| They | will | have | stemmed |
Present - Conditional
| I | would | stem |
| You | would | stem |
| She | would | stem |
| We | would | stem |
| They | would | stem |
Perfect - Conditional
| I | would | have | stemmed |
| You | would | have | stemmed |
| She | would | have | stemmed |
| We | would | have | stemmed |
| They | would | have | stemmed |