| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] about 20 per | 5 |
|
| 2 | be [adv] about 20 per | 5 |
|
| 3 | be about 20 per cent | 6 |
|
| 4 | be about 20 per cent | 6 |
|
| 5 | be about 20 per [unc] | 6 |
|
| 6 | be about 20 per [no cls] | 6 |
|
