| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [vb -s] become a issue | 5 |
|
| 2 | [noun sg] [vb -s] become a issue | 5 |
|
| 3 | [vb -s] become a [adj] issue | 11 |
|
| 4 | [vb -s] become a [adj] issue | 11 |
|
