| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] and it [be] difficult for | 6 |
|
| 2 | and it [be] [adv] difficult for | 11 |
|
| 3 | and it [be] [adv] difficult for | 11 |
|
| 4 | and it [be] very difficult for | 6 |
|
| 5 | and it [be] very difficult for | 6 |
|
| 6 | and it [be] difficult for [art] | 5 |
|
| 7 | and it [be] difficult for [art] | 5 |
|
