| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [is] [adv] [pron] happen [prep] | 19 |
|
| 2 | [adj] [is] [adv] [pron] [verb] to | 13 |
|
| 3 | [adj] [be] [adv] [pron] happen to | 11 |
|
| 4 | [adj] [is] [adv] [pron] happen to | 10 |
|
