| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [noun] [prep] | 603 |
|
| 2 | [Wh pn] had been [prep] | 330 |
|
| 3 | [Wh pn] had [noun] [prep] | 148 |
|
| 4 | [Wh pn] had been [noun] | 142 |
|
