| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and [vb past] at [noun] | 432 |
|
| 2 | [vb past] hard at [noun] | 28 |
|
| 3 | and [vb past] hard at | 12 |
|
| 4 | and hard at [noun] | 5 |
|
