| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he had been [v-ing] [prep] | 310 |
|
| 2 | had been [v-ing] [prep] [det] | 127 |
|
| 3 | he had been [v-ing] [det] | 30 |
|
| 4 | he had been [prep] [det] | 27 |
|
