| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] happen to | 25 |
|
| 2 | do not happen to | 25 |
|
| 3 | do [adv] happen to | 25 |
|
| 4 | do n't happen to | 18 |
|
| 5 | does [adv] happen to | 12 |
|
| 6 | did [adv] happen to | 11 |
|
| 7 | do not happen to | 7 |
|
