| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] on [prep] several | 22 |
|
| 2 | [verb] on for several | 18 |
|
| 3 | [vb past] on [prep] several | 8 |
|
| 4 | go on [prep] several | 8 |
|
