| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who had been [v-ing] [prep] | 160 |
|
| 2 | who had been [v-ing] [prep] | 160 |
|
| 3 | [pron] had been [v-ing] on | 104 |
|
| 4 | who had been [verb] on | 52 |
|
| 5 | who [verb] been [v-ing] on | 38 |
|
| 6 | who have been [v-ing] on | 38 |
|
| 7 | who [vb past] been [v-ing] on | 23 |
|
| 8 | who had [been] [v-ing] on | 19 |
|
| 9 | who had been [v-ing] on | 19 |
|
| 10 | who had [be] [v-ing] on | 19 |
|
| 11 | who had be [v-ing] on | 19 |
|
