| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] of these problems can be | 5 |
|
| 2 | [det] of these problems can be | 5 |
|
| 3 | of these problems can be [vb pp] | 5 |
|
| 4 | of these problems can be [verb] | 5 |
|
