| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] happen [adv] [is] that | 5 |
|
| 2 | [Wh det] happen [adv] [is] that | 5 |
|
| 3 | what happen [adv] [is] that | 5 |
|
| 4 | what happen [adv] [is] that | 5 |
|
| 5 | happen [adv] [is] that [art] | 5 |
|
| 6 | happen [adv] [is] that [art] | 5 |
|
