| I | flatten |
| you | flatten |
| he/she/it | flattens |
| we | flatten |
| you | flatten |
| they | flatten |
| I | have flattened |
| you | have flattened |
| he/she/it | has flattened |
| we | have flattened |
| you | have flattened |
| they | have flattened |
| I | flattened |
| you | flattened |
| he/she/it | flattened |
| we | flattened |
| you | flattened |
| they | flattened |
| I | had flattened |
| you | had flattened |
| he/she/it | had flattened |
| we | had flattened |
| you | had flattened |
| they | had flattened |
| I | will flatten |
| you | will flatten |
| he/she/it | will flatten |
| we | will flatten |
| you | will flatten |
| they | will flatten |
| I | will have flattened |
| you | will have flattened |
| he/she/it | will have flattened |
| we | will have flattened |
| you | will have flattened |
| they | will have flattened |
| I | am flattening |
| you | are flattening |
| he/she/it | is flattening |
| we | are flattening |
| you | are flattening |
| they | are flattening |
| I | have been flattening |
| you | have been flattening |
| he/she/it | has been flattening |
| we | have been flattening |
| you | have been flattening |
| they | have been flattening |
| I | was flattening |
| you | were flattening |
| he/she/it | was flattening |
| we | were flattening |
| you | were flattening |
| they | were flattening |
| I | had been flattening |
| you | had been flattening |
| he/she/it | had been flattening |
| we | had been flattening |
| you | had been flattening |
| they | had been flattening |
| I | will be flattening |
| you | will be flattening |
| he/she/it | will be flattening |
| we | will be flattening |
| you | will be flattening |
| they | will be flattening |
| I | will have been flattening |
| you | will have been flattening |
| he/she/it | will have been flattening |
| we | will have been flattening |
| you | will have been flattening |
| they | will have been flattening |
| I | would flatten |
| you | would flatten |
| he/she/it | would flatten |
| we | would flatten |
| you | would flatten |
| they | would flatten |
| I | would have flattened |
| you | would have flattened |
| he/she/it | would have flattened |
| we | would have flattened |
| you | would have flattened |
| they | would have flattened |
| I | would be flattening |
| you | would be flattening |
| he/she/it | would be flattening |
| we | would be flattening |
| you | would be flattening |
| they | would be flattening |
| I | would have been flattening |
| you | would have been flattening |
| he/she/it | would have been flattening |
| we | would have been flattening |
| you | would have been flattening |
| they | would have been flattening |
| You | flatten |
| we | Let's flatten |
| You | flatten |
