| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] [noun sg] | 35402 |
|
| 2 | [prep] [num] when | 1741 |
|
| 3 | [num] when [noun sg] | 148 |
|
| 4 | [prep] when [noun sg] | 68 |
|
