| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | problem is [to-vb] [adj] [noun] | 17 |
|
| 2 | problem [is] [to-vb] [adj] [noun] | 12 |
|
| 3 | problem [is] [to-vb] [adj] [noun sg] | 10 |
|
| 4 | problem [is] [to-vb] [adj] [noun pl] | 7 |
|
| 5 | problem [is] [to-vb] [det] [noun] | 5 |
|
