| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have become a issue | 8 |
|
| 2 | [verb] become a issue | 8 |
|
| 3 | has become a issue | 6 |
|
| 4 | [vb -s] become a issue | 6 |
|
| 5 | become a [adj] issue | 20 |
|
| 6 | become a [adj] issue | 20 |
|
| 7 | become a issue [prep] | 8 |
|
| 8 | become a issue [prep] | 8 |
|
