| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] a [adj] time | 590 |
|
| 2 | [vb past] a [adj] time | 504 |
|
| 3 | [vb past] a rough [noun] | 50 |
|
| 4 | [verb] a rough time | 19 |
|
| 5 | [vb past] [art] rough time | 6 |
|
| 6 | [vb past] a rough time | 6 |
|
| 7 | [vb past] [art] rough time | 6 |
|
| 8 | [vb past] a rough time | 6 |
|
