| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [vb -s] happen be | 71 |
|
| 2 | [Wh det] [vb -s] happen is | 70 |
|
| 3 | [Wh det] [vb -s] happened be | 50 |
|
| 4 | [Wh det] has happen be | 30 |
|
| 5 | [Wh det] 's happen be | 21 |
|
| 6 | [Wh det] [vb -s] to happen be | 20 |
|
| 7 | [Wh det] tends happen be | 14 |
|
