| Simple | Progressive | Perfect | Progressive |
| Present |
| I clutter |
| you clutter |
| he/she/it clutters |
| we clutter |
| you all clutter |
| they clutter |
|
| I am cluttering |
| you are cluttering |
| he/she/it is cluttering |
| we are cluttering |
| you all are cluttering |
| they are cluttering |
|
| I have cluttered |
| you have cluttered |
| he/she/it has cluttered |
| we have cluttered |
| you all have cluttered |
| they have cluttered |
|
| I have been cluttering |
| you have been cluttering |
| he/she/it has been cluttering |
| we have been cluttering |
| you all have been cluttering |
| they have been cluttering |
|
| Past |
| I cluttered |
| you cluttered |
| he/she/it cluttered |
| we cluttered |
| you all cluttered |
| they cluttered |
|
| I was cluttering |
| you were cluttering |
| he/she/it was cluttering |
| we were cluttering |
| you all were cluttering |
| they were cluttering |
|
| I had cluttered |
| you had cluttered |
| he/she/it had cluttered |
| we had cluttered |
| you all had cluttered |
| they had cluttered |
|
| I had been cluttering |
| you had been cluttering |
| he/she/it had been cluttering |
| we had been cluttering |
| you all had been cluttering |
| they had been cluttering |
|
| Future |
| I will clutter |
| you will clutter |
| he/she/it will clutter |
| we will clutter |
| you all will clutter |
| they will clutter |
|
| I will be cluttering |
| you will be cluttering |
| he/she/it will be cluttering |
| we are cluttering |
| you all will be cluttering |
| they will be cluttering |
|
| I will have cluttered |
| you will have cluttered |
| he/she/it will have cluttered |
| we will have cluttered |
| you all will have cluttered |
| they will have cluttered |
|
| I will have been cluttering |
| you will have been cluttering |
| he/she/it will have been cluttering |
| we will have been cluttering |
| you all will have been cluttering |
| they will have been cluttering |
|
