| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [is] a [adj] | 17108 |
|
| 2 | [noun sg] [is] a [adj] | 12253 |
|
| 3 | problem [is] [art] [adj] | 73 |
|
| 4 | problem [be] a [adj] | 33 |
|
| 5 | problem [is] a [adj] | 32 |
|
