| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | rate [prep] [noun] [prep] | 1718 |
|
| 2 | higher rate [prep] [noun] | 187 |
|
| 3 | higher [prep] [noun] [prep] | 53 |
|
| 4 | higher rate [noun] [prep] | 8 |
|
