| I | crumple up |
| you | crumple up |
| he/she/it | crumples up |
| we | crumple up |
| you | crumple up |
| they | crumple up |
| I | have crumpled up |
| you | have crumpled up |
| he/she/it | has crumpled up |
| we | have crumpled up |
| you | have crumpled up |
| they | have crumpled up |
| I | crumpled up |
| you | crumpled up |
| he/she/it | crumpled up |
| we | crumpled up |
| you | crumpled up |
| they | crumpled up |
| I | had crumpled up |
| you | had crumpled up |
| he/she/it | had crumpled up |
| we | had crumpled up |
| you | had crumpled up |
| they | had crumpled up |
| I | will crumple up |
| you | will crumple up |
| he/she/it | will crumple up |
| we | will crumple up |
| you | will crumple up |
| they | will crumple up |
| I | will have crumpled up |
| you | will have crumpled up |
| he/she/it | will have crumpled up |
| we | will have crumpled up |
| you | will have crumpled up |
| they | will have crumpled up |
| I | am crumpling up |
| you | are crumpling up |
| he/she/it | is crumpling up |
| we | are crumpling up |
| you | are crumpling up |
| they | are crumpling up |
| I | have been crumpling up |
| you | have been crumpling up |
| he/she/it | has been crumpling up |
| we | have been crumpling up |
| you | have been crumpling up |
| they | have been crumpling up |
| I | was crumpling up |
| you | were crumpling up |
| he/she/it | was crumpling up |
| we | were crumpling up |
| you | were crumpling up |
| they | were crumpling up |
| I | had been crumpling up |
| you | had been crumpling up |
| he/she/it | had been crumpling up |
| we | had been crumpling up |
| you | had been crumpling up |
| they | had been crumpling up |
| I | will be crumpling up |
| you | will be crumpling up |
| he/she/it | will be crumpling up |
| we | will be crumpling up |
| you | will be crumpling up |
| they | will be crumpling up |
| I | will have been crumpling up |
| you | will have been crumpling up |
| he/she/it | will have been crumpling up |
| we | will have been crumpling up |
| you | will have been crumpling up |
| they | will have been crumpling up |
| I | would crumple up |
| you | would crumple up |
| he/she/it | would crumple up |
| we | would crumple up |
| you | would crumple up |
| they | would crumple up |
| I | would have crumpled up |
| you | would have crumpled up |
| he/she/it | would have crumpled up |
| we | would have crumpled up |
| you | would have crumpled up |
| they | would have crumpled up |
| I | would be crumpling up |
| you | would be crumpling up |
| he/she/it | would be crumpling up |
| we | would be crumpling up |
| you | would be crumpling up |
| they | would be crumpling up |
| I | would have been crumpling up |
| you | would have been crumpling up |
| he/she/it | would have been crumpling up |
| we | would have been crumpling up |
| you | would have been crumpling up |
| they | would have been crumpling up |
| You | crumple up |
| we | Let's crumple up |
| You | crumple up |