| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this do not happen | 62 |
|
| 2 | this [vb -s] not happen | 34 |
|
| 3 | this does not happen | 34 |
|
| 4 | this [vb past] not happen | 28 |
|
| 5 | this did not happen | 28 |
|
