| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] is [art] [adj] | 26228 |
|
| 2 | problem be [art] [adj] | 138 |
|
| 3 | problem [be] [art] [adj] | 138 |
|
| 4 | problem [is] [art] [adj] | 86 |
|
