| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at the [adj] rate | 147 |
|
| 2 | [noun] at the official [noun] | 29 |
|
| 3 | [noun] at the official [noun sg] | 25 |
|
| 4 | [noun] at the official rate | 7 |
|
| 5 | [noun] at [art] official rate | 7 |
|
| 6 | [noun] at [art] official rate | 7 |
|
| 7 | [noun] [prep] the official rate | 7 |
|
| 8 | [noun] [prep] the official rate | 7 |
|
| 9 | [noun] at the official rate | 6 |
|
| 10 | [noun] at the official rate | 6 |
|
