| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [be] [v-ing] on [det] | 148 |
|
| 2 | [Wh det] [be] [v-ing] [prep] [det] | 103 |
|
| 3 | [Wh det] [be] [verb] on [det] | 50 |
|
| 4 | [Wh det] [be] [v-ing] on [adj] | 31 |
|
