| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [num] [noun] | 5049 |
|
| 2 | involved [prep] a [noun] | 433 |
|
| 3 | involved [prep] [num] [noun] | 38 |
|
| 4 | involved [prep] a [num] | 7 |
|
