| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] problem for [noun] | 139 |
|
| 2 | [be] [art] problem for | 113 |
|
| 3 | [be] [art] problem [noun] | 23 |
|
| 4 | [be] [art] for [noun] | 6 |
|
