| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] happen be | 11 |
|
| 2 | [noun] happen is | 7 |
|
| 3 | [noun] happen was | 7 |
|
| 4 | fact happen be | 6 |
|
| 5 | fact happen be | 6 |
|
| 6 | [noun] happened be | 6 |
|
