| I | impair | |
|---|---|---|
| you | impair | |
| he/she/it | impairs | |
| we | impair | |
| you | impair | |
| they | impair |
| I | impaired | |
|---|---|---|
| you | impaired | |
| he/she/it | impaired | |
| we | impaired | |
| you | impaired | |
| they | impaired |
| I | have | impaired | |
|---|---|---|---|
| you | have | impaired | |
| he/she/it | has | impaired | |
| we | have | impaired | |
| you | have | impaired | |
| they | have | impaired |
| I | had | impaired | |
|---|---|---|---|
| you | had | impaired | |
| he/she/it | had | impaired | |
| we | had | impaired | |
| you | had | impaired | |
| they | had | impaired |