| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been in [noun] | 575 |
|
| 2 | had been [v-ing] [noun] | 490 |
|
| 3 | been [v-ing] in [noun] | 297 |
|
| 4 | had been [v-ing] in | 279 |
|
