| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] a [noun sg] | 610 |
|
| 2 | rate [prep] a [noun sg] | 111 |
|
| 3 | rate [prep] [num] [noun sg] | 78 |
|
| 4 | rate [prep] [num] a | 38 |
|
