| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adv] [conj] | 3065 |
|
| 2 | it be [adv] difficult | 1332 |
|
| 3 | be [adv] difficult [conj] | 256 |
|
| 4 | it be difficult [conj] | 59 |
|
| 5 | it [adv] difficult [conj] | 40 |
|
