| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pron] had been [v-ing] | 730 |
|
| 2 | [pron] had been [v-ing] at | 74 |
|
| 3 | [conj] [pron] had been at | 73 |
|
| 4 | [conj] had been [v-ing] at | 5 |
|
