| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on which [pron] [be] [v-ing] [prep] | 6 |
|
| 2 | on which [pers pn] [be] [v-ing] [prep] | 6 |
|
| 3 | on which [pron] [be] [v-ing] [prep] | 6 |
|
| 4 | on which [pron] be [v-ing] [prep] | 6 |
|
| 5 | on which [pron] [was/were] [v-ing] [prep] | 5 |
|
