| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who had [adv] [verb] | 1604 |
|
| 2 | [pron] had once [verb] | 325 |
|
| 3 | who [verb] once [verb] | 59 |
|
| 4 | who have once [verb] | 59 |
|
| 5 | who [vb past] once [verb] | 57 |
|
