| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] in [verb] [pron] [prep] | 196 |
|
| 2 | [noun sg] in [verb] [pron] [prep] | 171 |
|
| 3 | difficulty in [verb] [pron] [prep] | 27 |
|
| 4 | difficulty [prep] [verb] [pron] [prep] | 26 |
|
