| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] [verb] [been] difficult [prep] | 20 |
|
| 2 | it [vb mod] [verb] [been] difficult [prep] | 20 |
|
| 3 | [pron] [vb mod] [verb] [been] difficult [prep] | 20 |
|
| 4 | [pers pn] [vb mod] [verb] [been] difficult [prep] | 20 |
|
| 5 | [vb mod] [verb] [been] [adv] difficult [prep] | 8 |
|
| 6 | [vb mod] [verb] [been] [adv] difficult [prep] | 8 |
|
| 7 | [vb mod] [verb] [been] difficult [verb] [prep] | 5 |
|
| 8 | [vb mod] [verb] [been] difficult [to-vb] [prep] | 5 |
|
| 9 | [vb mod] [verb] [been] difficult [prep] [art] | 10 |
|
| 10 | [vb mod] [verb] [been] difficult [prep] [art] | 10 |
|
| 11 | [vb mod] [verb] [been] difficult [prep] the | 8 |
|
| 12 | [vb mod] [verb] [been] difficult [prep] the | 8 |
|
| 13 | [vb mod] [verb] [been] difficult [prep] [pron] | 7 |
|
| 14 | [vb mod] [verb] [been] difficult [prep] [pers pn] | 5 |
|
