| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] on [det] | 357 |
|
| 2 | [Wh det] [be] [v-ing] on | 150 |
|
| 3 | [Wh det] [be] [v-ing] [det] | 78 |
|
| 4 | [Wh det] [be] on [det] | 21 |
|
