| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] what [is] happen [prep] | 155 |
|
| 2 | [be] what [is] happen [prep] | 18 |
|
| 3 | [be] [verb] what [is] happen | 12 |
|
| 4 | [be] [verb] what [is] [prep] | 9 |
|
| 5 | [be] [verb] what happen [prep] | 8 |
|
