| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had never [vb pp] on | 15 |
|
| 2 | have never [vb pp] on | 8 |
|
| 3 | has never [vb pp] on | 7 |
|
| 4 | 've never [vb pp] on | 5 |
|
