| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] had been [v-ing] in | 90 |
|
| 2 | [noun] they had been [v-ing] | 59 |
|
| 3 | they had been [v-ing] in | 21 |
|
| 4 | [noun] they had been in | 8 |
|
