| I | blacken |
| you | blacken |
| he/she/it | blackens |
| we | blacken |
| you | blacken |
| they | blacken |
| I | have blackened |
| you | have blackened |
| he/she/it | has blackened |
| we | have blackened |
| you | have blackened |
| they | have blackened |
| I | blackened |
| you | blackened |
| he/she/it | blackened |
| we | blackened |
| you | blackened |
| they | blackened |
| I | had blackened |
| you | had blackened |
| he/she/it | had blackened |
| we | had blackened |
| you | had blackened |
| they | had blackened |
| I | will blacken |
| you | will blacken |
| he/she/it | will blacken |
| we | will blacken |
| you | will blacken |
| they | will blacken |
| I | will have blackened |
| you | will have blackened |
| he/she/it | will have blackened |
| we | will have blackened |
| you | will have blackened |
| they | will have blackened |
| I | am blackening |
| you | are blackening |
| he/she/it | is blackening |
| we | are blackening |
| you | are blackening |
| they | are blackening |
| I | have been blackening |
| you | have been blackening |
| he/she/it | has been blackening |
| we | have been blackening |
| you | have been blackening |
| they | have been blackening |
| I | was blackening |
| you | were blackening |
| he/she/it | was blackening |
| we | were blackening |
| you | were blackening |
| they | were blackening |
| I | had been blackening |
| you | had been blackening |
| he/she/it | had been blackening |
| we | had been blackening |
| you | had been blackening |
| they | had been blackening |
| I | will be blackening |
| you | will be blackening |
| he/she/it | will be blackening |
| we | will be blackening |
| you | will be blackening |
| they | will be blackening |
| I | will have been blackening |
| you | will have been blackening |
| he/she/it | will have been blackening |
| we | will have been blackening |
| you | will have been blackening |
| they | will have been blackening |
| I | would blacken |
| you | would blacken |
| he/she/it | would blacken |
| we | would blacken |
| you | would blacken |
| they | would blacken |
| I | would have blackened |
| you | would have blackened |
| he/she/it | would have blackened |
| we | would have blackened |
| you | would have blackened |
| they | would have blackened |
| I | would be blackening |
| you | would be blackening |
| he/she/it | would be blackening |
| we | would be blackening |
| you | would be blackening |
| they | would be blackening |
| I | would have been blackening |
| you | would have been blackening |
| he/she/it | would have been blackening |
| we | would have been blackening |
| you | would have been blackening |
| they | would have been blackening |
| You | blacken |
| we | Let's blacken |
| You | blacken |