| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | because of the difficulty of [noun] | 5 |
|
| 2 | [conj] of the difficulty of [noun] | 5 |
|
| 3 | [subord] of the difficulty of [noun] | 5 |
|
| 4 | because of the difficulty of [noun] | 5 |
|
| 5 | [conj] of the difficulty of [noun sg] | 5 |
|
