| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | on [det] occasion | 1825 |
|
| 2 | [vb past] on [det] | 819 |
|
| 3 | [vb past] on occasion | 15 |
|
| 4 | [vb past] [det] occasion | 10 |
|
