| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] [adv] happen | 48 |
|
| 2 | it [adv] [adv] happens | 31 |
|
| 3 | it just [adv] happen | 27 |
|
| 4 | it just [adv] happen | 27 |
|
| 5 | it [adv] so happen | 26 |
|
| 6 | it [adv] [adv] happened | 18 |
|
| 7 | it [adv] really happen | 5 |
|
