| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [prep] he [verb] | 22 |
|
| 2 | [be] difficult [prep] he [verb] | 16 |
|
| 3 | it difficult [prep] he [verb] | 15 |
|
| 4 | it [be] difficult [prep] he | 11 |
|
| 5 | it [be] difficult [prep] [verb] | 5 |
|
