| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it was [adj] for [pron] [to-vb] | 166 |
|
| 2 | it was [adj] for [pron] [to-vb] | 152 |
|
| 3 | it [be] difficult for [pron] [to-vb] | 73 |
|
| 4 | it be difficult for [pron] [to-vb] | 73 |
|
| 5 | it was difficult for [pron] [to-vb] | 18 |
|
| 6 | it was difficult for [pron] [verb] | 18 |
|
| 7 | it was difficult for [pron] [to-vb] | 18 |
|
| 8 | [pers pn] was difficult for [pron] [to-vb] | 18 |
|
| 9 | it [was/were] difficult for [pron] [to-vb] | 18 |
|
| 10 | [pron] was difficult for [pron] [to-vb] | 18 |
|
| 11 | it was difficult [prep] [pron] [to-vb] | 18 |
|
