| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] happen when a | 22 |
|
| 2 | what happen when a | 20 |
|
| 3 | what happen when a | 20 |
|
| 4 | [Wh det] happen when a | 20 |
|
| 5 | [adj] happen when a | 7 |
|
| 6 | [noun] happen when a | 6 |
|
| 7 | [noun sg] happen when a | 5 |
|
| 8 | happen when a [noun sg] | 33 |
|
| 9 | happen when a [noun] | 33 |
|
| 10 | happen when a [adj] | 12 |
|
| 11 | happen when a [adj] | 11 |
|
