| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had served in the [noun pl] | 6 |
|
| 2 | had worked in the [noun pl] | 5 |
|
| 3 | had appeared in the [noun pl] | 5 |
|
| 4 | had participated in the [noun pl] | 5 |
|
