| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] on [adj] occasion | 94 |
|
| 2 | [verb] on several occasion | 85 |
|
| 3 | [vb past] on several [noun] | 23 |
|
| 4 | [vb past] [prep] several occasion | 17 |
|
| 5 | [vb past] on several occasion | 17 |
|
| 6 | [vb past] [prep] several occasion | 17 |
|
