| I | invigilate |
|---|---|
| you | invigilate |
| he/she/it | invigilates |
| we | invigilate |
| you | invigilate |
| they | invigilate |
| I | invigilated |
|---|---|
| you | invigilated |
| he/she/it | invigilated |
| we | invigilated |
| you | invigilated |
| they | invigilated |
| I | have | invigilated |
|---|---|---|
| you | have | invigilated |
| he/she/it | has | invigilated |
| we | have | invigilated |
| you | have | invigilated |
| they | have | invigilated |
| I | had | invigilated |
|---|---|---|
| you | had | invigilated |
| he/she/it | had | invigilated |
| we | had | invigilated |
| you | had | invigilated |
| they | had | invigilated |
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