| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [adj] problem [be] [noun] [noun] | 8 |
|
| 2 | [art] [adj] problem be [noun] [noun] | 8 |
|
| 3 | [art] [adj] problem [be] [noun] [noun] | 7 |
|
| 4 | [art] [adj] problem [be] [noun] [noun] | 7 |
|
| 5 | [art] [adj] problem [be] [noun sg] [noun] | 5 |
|
