| I | darken |
| you | darken |
| he/she/it | darkens |
| we | darken |
| you | darken |
| they | darken |
| I | have darkened |
| you | have darkened |
| he/she/it | has darkened |
| we | have darkened |
| you | have darkened |
| they | have darkened |
| I | darkened |
| you | darkened |
| he/she/it | darkened |
| we | darkened |
| you | darkened |
| they | darkened |
| I | had darkened |
| you | had darkened |
| he/she/it | had darkened |
| we | had darkened |
| you | had darkened |
| they | had darkened |
| I | will darken |
| you | will darken |
| he/she/it | will darken |
| we | will darken |
| you | will darken |
| they | will darken |
| I | will have darkened |
| you | will have darkened |
| he/she/it | will have darkened |
| we | will have darkened |
| you | will have darkened |
| they | will have darkened |
| I | am darkening |
| you | are darkening |
| he/she/it | is darkening |
| we | are darkening |
| you | are darkening |
| they | are darkening |
| I | have been darkening |
| you | have been darkening |
| he/she/it | has been darkening |
| we | have been darkening |
| you | have been darkening |
| they | have been darkening |
| I | was darkening |
| you | were darkening |
| he/she/it | was darkening |
| we | were darkening |
| you | were darkening |
| they | were darkening |
| I | had been darkening |
| you | had been darkening |
| he/she/it | had been darkening |
| we | had been darkening |
| you | had been darkening |
| they | had been darkening |
| I | will be darkening |
| you | will be darkening |
| he/she/it | will be darkening |
| we | will be darkening |
| you | will be darkening |
| they | will be darkening |
| I | will have been darkening |
| you | will have been darkening |
| he/she/it | will have been darkening |
| we | will have been darkening |
| you | will have been darkening |
| they | will have been darkening |
| I | would darken |
| you | would darken |
| he/she/it | would darken |
| we | would darken |
| you | would darken |
| they | would darken |
| I | would have darkened |
| you | would have darkened |
| he/she/it | would have darkened |
| we | would have darkened |
| you | would have darkened |
| they | would have darkened |
| I | would be darkening |
| you | would be darkening |
| he/she/it | would be darkening |
| we | would be darkening |
| you | would be darkening |
| they | would be darkening |
| I | would have been darkening |
| you | would have been darkening |
| he/she/it | would have been darkening |
| we | would have been darkening |
| you | would have been darkening |
| they | would have been darkening |
| You | darken |
| we | Let's darken |
| You | darken |