| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [conj] it [be] [adv] | 3338 |
|
| 2 | [conj] it [be] [adv] difficult | 378 |
|
| 3 | [verb] [conj] it [be] difficult | 76 |
|
| 4 | [verb] it [be] [adv] difficult | 62 |
|
| 5 | [verb] [conj] [be] [adv] difficult | 5 |
|
