| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [n mass] [prep] [num] [noun] | 159 |
|
| 2 | [n mass] [prep] a [num] [noun] | 108 |
|
| 3 | at [n mass] [prep] a [noun] | 98 |
|
| 4 | at [n mass] [prep] a [num] | 7 |
|
