| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] [prep] [pron] [to-vb] | 721 |
|
| 2 | it be [adj] [prep] [pron] [to-vb] | 662 |
|
| 3 | [pron] be difficult [prep] [pron] [to-vb] | 73 |
|
| 4 | [pers pn] be difficult [prep] [pron] [to-vb] | 73 |
|
| 5 | it [be] difficult [prep] [pron] [to-vb] | 73 |
|
| 6 | it be difficult [prep] [pron] [to-vb] | 73 |
|
| 7 | it be difficult [prep] [pron] [to-vb] | 73 |
|
| 8 | it be difficult [prep] [pron] [verb] | 73 |
|
