| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [verb] become a [adj] [noun] | 272 |
|
| 2 | [noun] [verb] [verb] a [adj] problem | 28 |
|
| 3 | [noun] [verb] become [art] [adj] problem | 10 |
|
| 4 | [noun] [verb] become [art] [adj] problem | 10 |
|
| 5 | [noun] [verb] become a [adj] problem | 10 |
|
| 6 | [noun] [verb] become a [adj] problem | 9 |
|
