| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | by only about [num] per | 5 |
|
| 2 | by only about [num] [no cls] | 5 |
|
| 3 | by only about [num] [unc] | 5 |
|
| 4 | by only about [num] per | 5 |
|
