| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [adv] happened [prep] | 50 |
|
| 2 | has [adv] happen to | 23 |
|
| 3 | has [adv] happen in | 15 |
|
| 4 | has ever happen [prep] | 12 |
|
| 5 | has already happen [prep] | 8 |
|
| 6 | has actually happen [prep] | 6 |
|
| 7 | has never happen [prep] | 5 |
|
