| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] | 835379 |
|
| 2 | a [adj -er] | 28132 |
|
| 3 | a tough | 730 |
|
| 4 | [art] tougher | 114 |
|
| 5 | [art] tougher | 114 |
|
| 6 | a tougher | 84 |
|
