| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [be] happening [prep] [art] | 282 |
|
| 2 | what [be] [verb] at [art] | 54 |
|
| 3 | [pron] [be] happening at [art] | 33 |
|
| 4 | what [be] [v-ing] at [art] | 29 |
|
| 5 | what [be] happen at [art] | 27 |
|
