| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] had [been] [v-ing] [prep] | 1015 |
|
| 2 | [subord] [pron] had [been] [prep] | 530 |
|
| 3 | [subord] [pron] had [been] [v-ing] | 402 |
|
