| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [noun] which | 18793 |
|
| 2 | [prep] [art] [noun pl] which | 3425 |
|
| 3 | [prep] [art] problems [pron] | 200 |
|
| 4 | [prep] [art] problem which | 118 |
|
| 5 | [prep] [art] problems which | 66 |
|
