| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | some [prep] [art] [adj] issue | 61 |
|
| 2 | some [prep] [art] key [noun] | 57 |
|
| 3 | [adj] [prep] [art] key issue | 29 |
|
| 4 | [det] [prep] [art] key issue | 16 |
|
| 5 | some [prep] [art] key issue | 9 |
|
| 6 | some [prep] [art] key issue | 9 |
|
