| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [adv] happen that [art] | 10 |
|
| 2 | it [vb mod] [adv] happen that [art] | 10 |
|
| 3 | it [vb mod] [adv] happen that the | 5 |
|
| 4 | it [vb mod] [adv] happen that a | 5 |
|
| 5 | it [vb mod] [adv] happen that the | 5 |
|
| 6 | it [vb mod] [adv] happen that a | 5 |
|
