| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] difficult for [pron] [to-vb] | 58 |
|
| 2 | [is] difficult [prep] [pron] [to-vb] | 58 |
|
| 3 | [is] difficult for [pron] [to-vb] | 58 |
|
| 4 | [is] difficult [prep] [pron] [to-vb] | 58 |
|
| 5 | [is] difficult [prep] [pers pn] [to-vb] | 54 |
|
| 6 | is difficult [prep] [pron] [to-vb] | 43 |
|
| 7 | [is] difficult [prep] us [to-vb] | 17 |
|
| 8 | [is] difficult [prep] we [to-vb] | 17 |
|
| 9 | 's difficult [prep] [pron] [to-vb] | 15 |
|
| 10 | [is] difficult [prep] they [to-vb] | 12 |
|
| 11 | [is] difficult [prep] them [to-vb] | 12 |
|
| 12 | [is] difficult [prep] i [to-vb] | 10 |
|
| 13 | [is] difficult [prep] me [to-vb] | 10 |
|
| 14 | [is] difficult [prep] you [to-vb] | 7 |
|
| 15 | [is] difficult [prep] you [to-vb] | 7 |
|
