| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it was difficult for [noun] | 6 |
|
| 2 | it was [adv] difficult for [noun] | 15 |
|
| 3 | it was [adv] difficult for [noun] | 10 |
|
| 4 | it was not difficult for [noun] | 5 |
|
| 5 | it was [not/n't] difficult for [noun] | 5 |
|
| 6 | it was difficult for [art] [noun] | 10 |
|
| 7 | it was difficult for [art] [noun] | 10 |
|
| 8 | it was difficult for the [noun] | 8 |
|
| 9 | it was difficult for the [noun] | 8 |
|
| 10 | it was difficult for [noun] [to-vb] | 12 |
|
| 11 | it was difficult for [noun] [verb] | 12 |
|
