| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun] [is] [conj] [art] | 1744 |
|
| 2 | [adj] problem [be] [conj] [art] | 92 |
|
| 3 | [adj] problem [is] [conj] [art] | 73 |
|
