| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] on this | 113 |
|
| 2 | what [be] [v-ing] on | 99 |
|
| 3 | what [be] [v-ing] this | 8 |
|
| 4 | what [be] on this | 7 |
|
