| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] which they [vb past] been [v-ing] | 7 |
|
| 2 | [prep] which they [vb past] been [v-ing] | 7 |
|
| 3 | which they [vb past] been [v-ing] [prep] | 6 |
|
| 4 | which they [vb past] been [v-ing] [prep] | 6 |
|
