| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] happen [is] that [art] | 8 |
|
| 2 | [vb mod] happen [is] that the | 8 |
|
| 3 | [vb mod] happen is that [art] | 8 |
|
| 4 | [vb mod] happen [is] that the | 8 |
|
| 5 | [vb mod] happen [is] that [art] | 8 |
|
| 6 | [vb mod] happen [is] that [art] | 7 |
|
