| I | stem |
| you | stem |
| he/she/it | stems |
| we | stem |
| you | stem |
| they | stem |
| I | have stemmed |
| you | have stemmed |
| he/she/it | has stemmed |
| we | have stemmed |
| you | have stemmed |
| they | have stemmed |
| I | stemmed |
| you | stemmed |
| he/she/it | stemmed |
| we | stemmed |
| you | stemmed |
| they | stemmed |
| I | had stemmed |
| you | had stemmed |
| he/she/it | had stemmed |
| we | had stemmed |
| you | had stemmed |
| they | had stemmed |
| I | will stem |
| you | will stem |
| he/she/it | will stem |
| we | will stem |
| you | will stem |
| they | will stem |
| I | will have stemmed |
| you | will have stemmed |
| he/she/it | will have stemmed |
| we | will have stemmed |
| you | will have stemmed |
| they | will have stemmed |
| I | am stemming |
| you | are stemming |
| he/she/it | is stemming |
| we | are stemming |
| you | are stemming |
| they | are stemming |
| I | have been stemming |
| you | have been stemming |
| he/she/it | has been stemming |
| we | have been stemming |
| you | have been stemming |
| they | have been stemming |
| I | was stemming |
| you | were stemming |
| he/she/it | was stemming |
| we | were stemming |
| you | were stemming |
| they | were stemming |
| I | had been stemming |
| you | had been stemming |
| he/she/it | had been stemming |
| we | had been stemming |
| you | had been stemming |
| they | had been stemming |
| I | will be stemming |
| you | will be stemming |
| he/she/it | will be stemming |
| we | will be stemming |
| you | will be stemming |
| they | will be stemming |
| I | will have been stemming |
| you | will have been stemming |
| he/she/it | will have been stemming |
| we | will have been stemming |
| you | will have been stemming |
| they | will have been stemming |
| I | would stem |
| you | would stem |
| he/she/it | would stem |
| we | would stem |
| you | would stem |
| they | would stem |
| I | would have stemmed |
| you | would have stemmed |
| he/she/it | would have stemmed |
| we | would have stemmed |
| you | would have stemmed |
| they | would have stemmed |
| I | would be stemming |
| you | would be stemming |
| he/she/it | would be stemming |
| we | would be stemming |
| you | would be stemming |
| they | would be stemming |
| I | would have been stemming |
| you | would have been stemming |
| he/she/it | would have been stemming |
| we | would have been stemming |
| you | would have been stemming |
| they | would have been stemming |
| You | stem |
| we | Let's stem |
| You | stem |