| I | stammer |
|---|---|
| you | stammer |
| he/she/it | stammers |
| we | stammer |
| you | stammer |
| they | stammer |
| I | stammered |
|---|---|
| you | stammered |
| he/she/it | stammered |
| we | stammered |
| you | stammered |
| they | stammered |
| I | have | stammered |
|---|---|---|
| you | have | stammered |
| he/she/it | has | stammered |
| we | have | stammered |
| you | have | stammered |
| they | have | stammered |
| I | had | stammered |
|---|---|---|
| you | had | stammered |
| he/she/it | had | stammered |
| we | had | stammered |
| you | had | stammered |
| they | had | stammered |