| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | than a quarter [prep] [noun] | 17 |
|
| 2 | than a quarter of [noun] | 15 |
|
| 3 | than a quarter [prep] [noun pl] | 9 |
|
| 4 | than a quarter [prep] [noun sg] | 5 |
|
