| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [Wh det] has happen | 16 |
|
| 2 | [is] [Wh det] has happen | 16 |
|
| 3 | [be] what has happen | 16 |
|
| 4 | [be] [Wh det] has happened | 14 |
|
| 5 | is [Wh det] has happen | 12 |
|
