| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] to be [adj] | 102 |
|
| 2 | it [be] difficult to be | 66 |
|
| 3 | [be] difficult to be [adj] | 52 |
|
| 4 | it difficult to be [adj] | 7 |
|
