| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be difficult [verb] the | 313 |
|
| 2 | it be difficult [verb] [pron] | 285 |
|
| 3 | it be [verb] [pron] the | 18 |
|
| 4 | be difficult [verb] [pron] the | 16 |
|
