| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] happened [prep] | 121 |
|
| 2 | it have [adv] happened | 111 |
|
| 3 | it have happened [prep] | 88 |
|
| 4 | it have [adv] [prep] | 58 |
|
