| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be a [adj] | 125692 |
|
| 2 | be a [adj -er] | 2372 |
|
| 3 | be a tough | 206 |
|
| 4 | be [art] tougher | 14 |
|
| 5 | [be] a tougher | 12 |
|
