| I | tumble |
| you | tumble |
| he/she/it | tumbles |
| we | tumble |
| you | tumble |
| they | tumble |
| I | have tumbled |
| you | have tumbled |
| he/she/it | has tumbled |
| we | have tumbled |
| you | have tumbled |
| they | have tumbled |
| I | tumbled |
| you | tumbled |
| he/she/it | tumbled |
| we | tumbled |
| you | tumbled |
| they | tumbled |
| I | had tumbled |
| you | had tumbled |
| he/she/it | had tumbled |
| we | had tumbled |
| you | had tumbled |
| they | had tumbled |
| I | will tumble |
| you | will tumble |
| he/she/it | will tumble |
| we | will tumble |
| you | will tumble |
| they | will tumble |
| I | will have tumbled |
| you | will have tumbled |
| he/she/it | will have tumbled |
| we | will have tumbled |
| you | will have tumbled |
| they | will have tumbled |
| I | am tumbling |
| you | are tumbling |
| he/she/it | is tumbling |
| we | are tumbling |
| you | are tumbling |
| they | are tumbling |
| I | have been tumbling |
| you | have been tumbling |
| he/she/it | has been tumbling |
| we | have been tumbling |
| you | have been tumbling |
| they | have been tumbling |
| I | was tumbling |
| you | were tumbling |
| he/she/it | was tumbling |
| we | were tumbling |
| you | were tumbling |
| they | were tumbling |
| I | had been tumbling |
| you | had been tumbling |
| he/she/it | had been tumbling |
| we | had been tumbling |
| you | had been tumbling |
| they | had been tumbling |
| I | will be tumbling |
| you | will be tumbling |
| he/she/it | will be tumbling |
| we | will be tumbling |
| you | will be tumbling |
| they | will be tumbling |
| I | will have been tumbling |
| you | will have been tumbling |
| he/she/it | will have been tumbling |
| we | will have been tumbling |
| you | will have been tumbling |
| they | will have been tumbling |
| I | would tumble |
| you | would tumble |
| he/she/it | would tumble |
| we | would tumble |
| you | would tumble |
| they | would tumble |
| I | would have tumbled |
| you | would have tumbled |
| he/she/it | would have tumbled |
| we | would have tumbled |
| you | would have tumbled |
| they | would have tumbled |
| I | would be tumbling |
| you | would be tumbling |
| he/she/it | would be tumbling |
| we | would be tumbling |
| you | would be tumbling |
| they | would be tumbling |
| I | would have been tumbling |
| you | would have been tumbling |
| he/she/it | would have been tumbling |
| we | would have been tumbling |
| you | would have been tumbling |
| they | would have been tumbling |
| You | tumble |
| we | Let's tumble |
| You | tumble |