| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun] [prep] | 18392 |
|
| 2 | at [noun sg] [prep] | 6923 |
|
| 3 | [prep] quarter [prep] | 221 |
|
| 4 | [prep] quarter [prep] | 221 |
|
| 5 | at quarter [prep] | 118 |
|
| 6 | at quarter [prep] | 118 |
|
