| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which [pron] serve as | 9 |
|
| 2 | [Wh det] he serve as | 9 |
|
| 3 | [Wh det] [pron] serve as | 9 |
|
| 4 | [Wh det] he serve as | 9 |
|
| 5 | [Wh det] [pers pn] serve as | 9 |
|
| 6 | [Wh det] [pron] served as | 8 |
|
