| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] become a [adj] [noun] | 695 |
|
| 2 | [noun] become a [adj] [noun sg] | 677 |
|
| 3 | [noun] [verb] a [adj] problem | 134 |
|
| 4 | [noun] become [art] [adj] problem | 13 |
|
| 5 | [noun] become a [adj] problem | 13 |
|
| 6 | [noun] become [art] [adj] problem | 13 |
|
| 7 | [noun] become a [adj] problem | 11 |
|
| 8 | [noun] become a [adj] problem | 11 |
|
