| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have once had | 26 |
|
| 2 | [verb] once had | 26 |
|
| 3 | [vb past] once had | 25 |
|
| 4 | had once had | 19 |
|
| 5 | 'd once had | 6 |
|
