| Simple | Progressive | Perfect | Progressive |
| Present |
| I checkoff |
| you checkoff |
| he/she/it checkoffs |
| we checkoff |
| you all checkoff |
| they checkoff |
|
| I am checkoffing |
| you are checkoffing |
| he/she/it is checkoffing |
| we are checkoffing |
| you all are checkoffing |
| they are checkoffing |
|
| I have checkoffed |
| you have checkoffed |
| he/she/it has checkoffed |
| we have checkoffed |
| you all have checkoffed |
| they have checkoffed |
|
| I have been checkoffing |
| you have been checkoffing |
| he/she/it has been checkoffing |
| we have been checkoffing |
| you all have been checkoffing |
| they have been checkoffing |
|
| Past |
| I checkoffed |
| you checkoffed |
| he/she/it checkoffed |
| we checkoffed |
| you all checkoffed |
| they checkoffed |
|
| I was checkoffing |
| you were checkoffing |
| he/she/it was checkoffing |
| we were checkoffing |
| you all were checkoffing |
| they were checkoffing |
|
| I had checkoffed |
| you had checkoffed |
| he/she/it had checkoffed |
| we had checkoffed |
| you all had checkoffed |
| they had checkoffed |
|
| I had been checkoffing |
| you had been checkoffing |
| he/she/it had been checkoffing |
| we had been checkoffing |
| you all had been checkoffing |
| they had been checkoffing |
|
| Future |
| I will checkoff |
| you will checkoff |
| he/she/it will checkoff |
| we will checkoff |
| you all will checkoff |
| they will checkoff |
|
| I will be checkoffing |
| you will be checkoffing |
| he/she/it will be checkoffing |
| we are checkoffing |
| you all will be checkoffing |
| they will be checkoffing |
|
| I will have checkoffed |
| you will have checkoffed |
| he/she/it will have checkoffed |
| we will have checkoffed |
| you all will have checkoffed |
| they will have checkoffed |
|
| I will have been checkoffing |
| you will have been checkoffing |
| he/she/it will have been checkoffing |
| we will have been checkoffing |
| you all will have been checkoffing |
| they will have been checkoffing |
|
