| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] of the difficulty of | 48 |
|
| 2 | [noun] [conj] the difficulty of | 42 |
|
| 3 | [noun] of the difficulty of | 31 |
|
| 4 | [noun] [conj] of the difficulty | 25 |
|
