| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be difficult for [pers pn] [to-vb] | 68 |
|
| 2 | it be difficult [prep] [pers pn] [to-vb] | 68 |
|
| 3 | it be difficult for [pers pn] [to-vb] | 68 |
|
| 4 | it is difficult [prep] [pers pn] [to-vb] | 39 |
|
| 5 | it was difficult [prep] [pers pn] [to-vb] | 17 |
|
| 6 | it be difficult [prep] us [to-vb] | 15 |
|
| 7 | it be difficult [prep] them [to-vb] | 15 |
|
| 8 | it be difficult [prep] me [to-vb] | 13 |
|
| 9 | it 's difficult [prep] [pers pn] [to-vb] | 12 |
|
| 10 | it be difficult [prep] him [to-vb] | 10 |
|
| 11 | it be difficult [prep] you [to-vb] | 7 |
|
| 12 | it be difficult [prep] her [to-vb] | 7 |
|
