| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has become a [adj] | 172 |
|
| 2 | [noun] has a [adj] problem | 15 |
|
| 3 | [noun] become a [adj] problem | 11 |
|
| 4 | has become a [adj] problem | 6 |
|
