| Simple | Progressive | Perfect | Progressive |
| Present |
| I blacken |
| you blacken |
| he/she/it blackens |
| we blacken |
| you all blacken |
| they blacken |
|
| I am blackening |
| you are blackening |
| he/she/it is blackening |
| we are blackening |
| you all are blackening |
| they are blackening |
|
| I have blackened |
| you have blackened |
| he/she/it has blackened |
| we have blackened |
| you all have blackened |
| they have blackened |
|
| I have been blackening |
| you have been blackening |
| he/she/it has been blackening |
| we have been blackening |
| you all have been blackening |
| they have been blackening |
|
| Past |
| I blackened |
| you blackened |
| he/she/it blackened |
| we blackened |
| you all blackened |
| they blackened |
|
| I was blackening |
| you were blackening |
| he/she/it was blackening |
| we were blackening |
| you all were blackening |
| they were blackening |
|
| I had blackened |
| you had blackened |
| he/she/it had blackened |
| we had blackened |
| you all had blackened |
| they had blackened |
|
| I had been blackening |
| you had been blackening |
| he/she/it had been blackening |
| we had been blackening |
| you all had been blackening |
| they had been blackening |
|
| Future |
| I will blacken |
| you will blacken |
| he/she/it will blacken |
| we will blacken |
| you all will blacken |
| they will blacken |
|
| I will be blackening |
| you will be blackening |
| he/she/it will be blackening |
| we are blackening |
| you all will be blackening |
| they will be blackening |
|
| I will have blackened |
| you will have blackened |
| he/she/it will have blackened |
| we will have blackened |
| you all will have blackened |
| they will have blackened |
|
| I will have been blackening |
| you will have been blackening |
| he/she/it will have been blackening |
| we will have been blackening |
| you all will have been blackening |
| they will have been blackening |
|
