| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] a [adj] [noun] | 47518 |
|
| 2 | problem [is] [adj] [noun] | 56 |
|
| 3 | problem [is] a [noun] | 28 |
|
| 4 | problem [is] a [adj] | 23 |
|
| 5 | problem a [adj] [noun] | 10 |
|
