| Simple | Progressive | Perfect | Progressive |
| Present |
| I undersign |
| you undersign |
| he/she/it undersigns |
| we undersign |
| you all undersign |
| they undersign |
|
| I am undersigning |
| you are undersigning |
| he/she/it is undersigning |
| we are undersigning |
| you all are undersigning |
| they are undersigning |
|
| I have undersigned |
| you have undersigned |
| he/she/it has undersigned |
| we have undersigned |
| you all have undersigned |
| they have undersigned |
|
| I have been undersigning |
| you have been undersigning |
| he/she/it has been undersigning |
| we have been undersigning |
| you all have been undersigning |
| they have been undersigning |
|
| Past |
| I undersigned |
| you undersigned |
| he/she/it undersigned |
| we undersigned |
| you all undersigned |
| they undersigned |
|
| I was undersigning |
| you were undersigning |
| he/she/it was undersigning |
| we were undersigning |
| you all were undersigning |
| they were undersigning |
|
| I had undersigned |
| you had undersigned |
| he/she/it had undersigned |
| we had undersigned |
| you all had undersigned |
| they had undersigned |
|
| I had been undersigning |
| you had been undersigning |
| he/she/it had been undersigning |
| we had been undersigning |
| you all had been undersigning |
| they had been undersigning |
|
| Future |
| I will undersign |
| you will undersign |
| he/she/it will undersign |
| we will undersign |
| you all will undersign |
| they will undersign |
|
| I will be undersigning |
| you will be undersigning |
| he/she/it will be undersigning |
| we are undersigning |
| you all will be undersigning |
| they will be undersigning |
|
| I will have undersigned |
| you will have undersigned |
| he/she/it will have undersigned |
| we will have undersigned |
| you all will have undersigned |
| they will have undersigned |
|
| I will have been undersigning |
| you will have been undersigning |
| he/she/it will have been undersigning |
| we will have been undersigning |
| you all will have been undersigning |
| they will have been undersigning |
|
