| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [v-ing] [prep] | 61 |
|
| 2 | been [verb] as [v-ing] [prep] | 40 |
|
| 3 | had been [verb] as [v-ing] | 26 |
|
| 4 | had been [verb] as [prep] | 10 |
|
