| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] it [is] happen | 10 |
|
| 2 | [Wh adv] it [is] happening | 10 |
|
| 3 | why it [is] happen | 8 |
|
| 4 | [Wh adv] it 's happen | 5 |
|
| 5 | [Wh adv] it is happen | 5 |
|
