| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [Wh det] can arise | 24 |
|
| 2 | problem [Wh det] [modal v] arise | 22 |
|
| 3 | problem [Wh det] can [verb] | 15 |
|
| 4 | problem [Wh det] can [vb infin] | 15 |
|
| 5 | problem [Wh det] can arise | 7 |
|
| 6 | problem [pron] can arise | 7 |
|
