| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [v-ing] on | 2499 |
|
| 2 | [Wh det] [be] [v-ing] [prep] | 1687 |
|
| 3 | [Wh det] [be] [v-ing] [prep] | 1572 |
|
| 4 | [Wh det] [be] [verb] on | 930 |
|
| 5 | [Wh det] [be] [v-ing] on | 150 |
|
