Present
| I | crumple |
| You | crumple |
| She | crumples |
| We | crumple |
| They | crumple |
Past
| I | crumpled |
| You | crumpled |
| She | crumpled |
| We | crumpled |
| They | crumpled |
Perfect
| I | have | crumpled |
| You | have | crumpled |
| She | has | crumpled |
| We | have | crumpled |
| They | have | crumpled |
Future
| I | will | crumple |
| You | will | crumple |
| She | will | crumple |
| We | will | crumple |
| They | will | crumple |
Past Perfect
| I | had | crumpled |
| You | had | crumpled |
| She | had | crumpled |
| We | had | crumpled |
| They | had | crumpled |
Future Perfect
| I | will | have | crumpled |
| You | will | have | crumpled |
| She | will | have | crumpled |
| We | will | have | crumpled |
| They | will | have | crumpled |
Present - Conditional
| I | would | crumple |
| You | would | crumple |
| She | would | crumple |
| We | would | crumple |
| They | would | crumple |
Perfect - Conditional
| I | would | have | crumpled |
| You | would | have | crumpled |
| She | would | have | crumpled |
| We | would | have | crumpled |
| They | would | have | crumpled |