| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] by about 20 | 7 |
|
| 2 | by about 20 per | 5 |
|
| 3 | by about 20 [no cls] | 5 |
|
| 4 | by about 20 [unc] | 5 |
|
| 5 | by about 20 per | 5 |
|
| 6 | by about 20 [noun] | 5 |
|
