| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [subord] a [noun] | 328 |
|
| 2 | issue [prep] a [noun] | 193 |
|
| 3 | issue [prep] [subord] [noun] | 30 |
|
| 4 | issue [prep] [subord] a | 7 |
|
