| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] it [adj] [prep] [pron] [to-vb] | 83 |
|
| 2 | [vb past] it [adj] [prep] [pron] [to-vb] | 76 |
|
| 3 | [verb] it difficult [prep] [pron] [to-vb] | 61 |
|
| 4 | [vb past] it difficult [prep] [pron] [verb] | 27 |
|
| 5 | [vb past] [pron] difficult [prep] [pron] [to-vb] | 26 |
|
| 6 | [vb past] [pers pn] difficult [prep] [pron] [to-vb] | 26 |
|
| 7 | [vb past] it difficult [prep] [pron] [to-vb] | 26 |
|
| 8 | [vb past] it difficult [prep] [pron] [to-vb] | 26 |
|
