| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [noun] [prep] | 603 |
|
| 2 | had [noun] [prep] [v-ing] | 168 |
|
| 3 | had been [prep] [v-ing] | 43 |
|
| 4 | been [noun] [prep] [v-ing] | 40 |
|
| 5 | had been [noun] [v-ing] | 9 |
|
