| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] i had been [v-ing] | 12 |
|
| 2 | [prep] [Wh det] i had [been] [v-ing] | 10 |
|
| 3 | [prep] which i had [been] [v-ing] | 6 |
|
| 4 | [prep] which i had [been] [v-ing] | 6 |
|
