| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] [verb] what | 672 |
|
| 2 | [noun sg] [prep] [verb] what | 527 |
|
| 3 | difficulty [prep] [verb] [pron] | 217 |
|
| 4 | difficulty [prep] [verb] what | 37 |
|
| 5 | difficulty [prep] [verb] [Wh det] | 28 |
|
| 6 | difficulty [prep] [verb] what | 25 |
|
| 7 | difficulty [prep] [verb] what | 25 |
|
