| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what had happen [art] | 15 |
|
| 2 | [Wh det] had happened [art] | 15 |
|
| 3 | [Wh det] had happen [art] | 15 |
|
| 4 | [Wh det] had happen the | 12 |
|
| 5 | [Wh det] had happen the | 12 |
|
