| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] does [adv] happen | 75 |
|
| 2 | [det] [vb -s] [not/n't] happen | 73 |
|
| 3 | [det] [vb -s] not happen | 73 |
|
| 4 | this [vb -s] [adv] happen | 48 |
|
| 5 | [det] [vb -s] not happen | 45 |
|
| 6 | [det] [vb -s] n't happen | 28 |
|
| 7 | that [vb -s] [adv] happen | 26 |
|
