| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had been [verb] [v-ing] [prep] | 61 |
|
| 2 | had been [verb] for [v-ing] | 59 |
|
| 3 | been [verb] for [v-ing] [prep] | 41 |
|
| 4 | had been [verb] for [prep] | 25 |
|
| 5 | had [verb] for [v-ing] [prep] | 7 |
|
