| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] for [adj] [noun] | 233 |
|
| 2 | it [is] difficult for [noun] | 33 |
|
| 3 | it [is] difficult for [adj] | 23 |
|
| 4 | it difficult for [adj] [noun] | 22 |
|
| 5 | [is] difficult for [adj] [noun] | 19 |
|
