| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [adv] happened to | 48 |
|
| 2 | [vb -s] [adv] happen to | 37 |
|
| 3 | has [adv] happen to | 33 |
|
| 4 | [vb -s] [not/n't] happen to | 22 |
|
| 5 | [vb -s] not happen to | 22 |
|
| 6 | [vb -s] n't happen to | 18 |
|
| 7 | [vb -s] ever happen to | 14 |
|
| 8 | [vb -s] ever happen to | 14 |
|
| 9 | 's [adv] happen to | 14 |
|
| 10 | does [adv] happen to | 12 |
|
| 11 | [vb -s] [adv] happen to | 11 |
|
| 12 | [vb -s] never happen to | 9 |
|
| 13 | [vb -s] never happen to | 9 |
|
