| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only about [num] per | 116 |
|
| 2 | [is] only about [num] | 76 |
|
| 3 | [is] only [num] per | 47 |
|
| 4 | [is] about [num] per | 41 |
|
