| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [v-ing] [prep] [adj] | 304 |
|
| 2 | it had been [prep] [adj] | 60 |
|
| 3 | it had been [v-ing] [prep] | 41 |
|
| 4 | it had been [v-ing] [adj] | 9 |
|
