| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] become a [adj] [noun] | 358 |
|
| 2 | [vb -s] [verb] a [adj] problem | 30 |
|
| 3 | [verb] become a [adj] problem | 14 |
|
| 4 | [vb -s] become [art] [adj] problem | 9 |
|
