| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [adj] | 31108 |
|
| 2 | for a [adj] | 25236 |
|
| 3 | [prep] a tough | 145 |
|
| 4 | [prep] a tough | 145 |
|
| 5 | for [art] tough | 30 |
|
| 6 | for a tough | 25 |
|
| 7 | for a tough | 20 |
|
