| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] a [adj] time | 590 |
|
| 2 | [vb past] a [adj] time | 504 |
|
| 3 | [verb] a tough time | 36 |
|
| 4 | [vb past] a tough [noun] | 35 |
|
| 5 | [vb past] a tough time | 8 |
|
| 6 | [vb past] [art] tough time | 8 |
|
| 7 | [vb past] a tough time | 8 |
|
| 8 | [vb past] [art] tough time | 8 |
|
