| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] has n't [verb] | 1171 |
|
| 2 | [pron] [verb] n't happen | 196 |
|
| 3 | [pron] [vb -s] n't happen | 87 |
|
| 4 | [pron] has [adv] happen | 77 |
|
| 5 | [pron] have n't happen | 44 |
|
| 6 | [pron] has not happen | 31 |
|
| 7 | [pron] has [not/n't] happen | 31 |
|
