| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] difficult | 1332 |
|
| 2 | it be [adv] [coord] | 321 |
|
| 3 | be [adv] difficult [coord] | 104 |
|
| 4 | it be difficult [coord] | 25 |
|
| 5 | it [adv] difficult [coord] | 10 |
|
