| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have served [prep] | 87 |
|
| 2 | have [adv] served [prep] | 51 |
|
| 3 | [Wh pn] have [adv] served | 25 |
|
| 4 | [Wh pn] have [adv] [prep] | 15 |
|
