| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [num] [noun pl] [prep] | 247 |
|
| 2 | quarter [prep] a [num] [noun pl] | 89 |
|
| 3 | quarter [prep] a [num] [prep] | 16 |
|
| 4 | quarter [prep] [num] [noun pl] [prep] | 5 |
|
