| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have never once [vb pp] | 30 |
|
| 2 | [vb past] never once [vb pp] | 18 |
|
| 3 | had never once [vb pp] | 16 |
|
| 4 | [vb base] never once [vb pp] | 8 |
|
| 5 | 've never once [vb pp] | 5 |
|
