| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] [prep] [noun pl] | 83 |
|
| 2 | had been [v-ing] [noun pl] [prep] | 83 |
|
| 3 | been [v-ing] [noun pl] [prep] [noun pl] | 28 |
|
| 4 | had been [noun pl] [prep] [noun pl] | 14 |
|
