| Simple | Progressive | Perfect | Progressive |
| Present |
| I stammer |
| you stammer |
| he/she/it stammers |
| we stammer |
| you all stammer |
| they stammer |
|
| I am stammering |
| you are stammering |
| he/she/it is stammering |
| we are stammering |
| you all are stammering |
| they are stammering |
|
| I have stammered |
| you have stammered |
| he/she/it has stammered |
| we have stammered |
| you all have stammered |
| they have stammered |
|
| I have been stammering |
| you have been stammering |
| he/she/it has been stammering |
| we have been stammering |
| you all have been stammering |
| they have been stammering |
|
| Past |
| I stammered |
| you stammered |
| he/she/it stammered |
| we stammered |
| you all stammered |
| they stammered |
|
| I was stammering |
| you were stammering |
| he/she/it was stammering |
| we were stammering |
| you all were stammering |
| they were stammering |
|
| I had stammered |
| you had stammered |
| he/she/it had stammered |
| we had stammered |
| you all had stammered |
| they had stammered |
|
| I had been stammering |
| you had been stammering |
| he/she/it had been stammering |
| we had been stammering |
| you all had been stammering |
| they had been stammering |
|
| Future |
| I will stammer |
| you will stammer |
| he/she/it will stammer |
| we will stammer |
| you all will stammer |
| they will stammer |
|
| I will be stammering |
| you will be stammering |
| he/she/it will be stammering |
| we are stammering |
| you all will be stammering |
| they will be stammering |
|
| I will have stammered |
| you will have stammered |
| he/she/it will have stammered |
| we will have stammered |
| you all will have stammered |
| they will have stammered |
|
| I will have been stammering |
| you will have been stammering |
| he/she/it will have been stammering |
| we will have been stammering |
| you all will have been stammering |
| they will have been stammering |
|
