| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [adv] been [v-ing] | 601 |
|
| 2 | had [adv] been in | 301 |
|
| 3 | had been [v-ing] in | 279 |
|
| 4 | [adv] been [v-ing] in | 54 |
|
