| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] on [prep] several [noun] | 20 |
|
| 2 | [verb] on [prep] several [noun pl] | 20 |
|
| 3 | [verb] on for several [noun] | 17 |
|
| 4 | [vb past] on [prep] several [noun] | 8 |
|
| 5 | go on [prep] several [noun] | 7 |
|
| 6 | [verb] on [prep] several year | 5 |
|
| 7 | [verb] on [prep] several years | 5 |
|
