| Simple | Progressive | Perfect | Progressive |
| Present |
| I crumb |
| you crumb |
| he/she/it crumbs |
| we crumb |
| you all crumb |
| they crumb |
|
| I am crumbing |
| you are crumbing |
| he/she/it is crumbing |
| we are crumbing |
| you all are crumbing |
| they are crumbing |
|
| I have crumbed |
| you have crumbed |
| he/she/it has crumbed |
| we have crumbed |
| you all have crumbed |
| they have crumbed |
|
| I have been crumbing |
| you have been crumbing |
| he/she/it has been crumbing |
| we have been crumbing |
| you all have been crumbing |
| they have been crumbing |
|
| Past |
| I crumbed |
| you crumbed |
| he/she/it crumbed |
| we crumbed |
| you all crumbed |
| they crumbed |
|
| I was crumbing |
| you were crumbing |
| he/she/it was crumbing |
| we were crumbing |
| you all were crumbing |
| they were crumbing |
|
| I had crumbed |
| you had crumbed |
| he/she/it had crumbed |
| we had crumbed |
| you all had crumbed |
| they had crumbed |
|
| I had been crumbing |
| you had been crumbing |
| he/she/it had been crumbing |
| we had been crumbing |
| you all had been crumbing |
| they had been crumbing |
|
| Future |
| I will crumb |
| you will crumb |
| he/she/it will crumb |
| we will crumb |
| you all will crumb |
| they will crumb |
|
| I will be crumbing |
| you will be crumbing |
| he/she/it will be crumbing |
| we are crumbing |
| you all will be crumbing |
| they will be crumbing |
|
| I will have crumbed |
| you will have crumbed |
| he/she/it will have crumbed |
| we will have crumbed |
| you all will have crumbed |
| they will have crumbed |
|
| I will have been crumbing |
| you will have been crumbing |
| he/she/it will have been crumbing |
| we will have been crumbing |
| you all will have been crumbing |
| they will have been crumbing |
|
