| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] a [noun] | 3372 |
|
| 2 | [prep] [adv] a [noun sg] | 3286 |
|
| 3 | [prep] [adv] [art] quarter | 153 |
|
| 4 | [prep] [adv] a quarter | 151 |
|
