| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they had been [v-ing] [prep] | 108 |
|
| 2 | that had been [v-ing] [prep] | 57 |
|
| 3 | that they had been [v-ing] | 39 |
|
| 4 | that they had been [prep] | 7 |
|
