| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of about [num] per cent [prep] | 28 |
|
| 2 | of about [num] [no cls] cent [prep] | 28 |
|
| 3 | of about [num] per cent [prep] | 28 |
|
| 4 | of about [num] [unc] cent of | 13 |
|
