| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a further [adj] per | 56 |
|
| 2 | [prep] a further [num] per | 56 |
|
| 3 | [prep] a [adj] 20 per | 9 |
|
| 4 | [prep] a far 20 per | 6 |
|
| 5 | [prep] a further 20 [no cls] | 6 |
|
| 6 | [prep] a [adj -er] 20 per | 6 |
|
| 7 | [prep] a further 20 [unc] | 6 |
|
| 8 | [prep] a further 20 per | 6 |
|
| 9 | [prep] a further 20 per | 6 |
|
| 10 | [prep] [art] further 20 per | 6 |
|
