| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] never happened to | 17 |
|
| 2 | have never happened to | 17 |
|
| 3 | [vb -s] never happened to | 9 |
|
| 4 | had never happened to | 8 |
|
| 5 | [vb past] never happened to | 8 |
|
| 6 | has never happened to | 5 |
|
