| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it happen [adv] [adj] [noun] | 11 |
|
| 2 | it happened [adv] [adj] [noun] | 8 |
|
| 3 | it happen [adv] [adj] [noun sg] | 6 |
|
| 4 | it happen [adv] [adj] [noun pl] | 5 |
|
| 5 | it happen [adv] [adj] year | 5 |
|
