| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] [v-ing] [pron] | 510 |
|
| 2 | [been] [v-ing] to [pron] | 199 |
|
| 3 | had [been] [v-ing] to | 118 |
|
| 4 | had [been] to [pron] | 16 |
|
