| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be difficult [to-vb] [prep] the | 43 |
|
| 2 | [pers pn] be difficult [verb] [prep] the | 38 |
|
| 3 | it be difficult [verb] [prep] the | 34 |
|
| 4 | it be difficult [verb] [prep] the | 34 |
|
| 5 | [pron] is difficult [verb] [prep] the | 24 |
|
| 6 | [pron] was difficult [verb] [prep] the | 9 |
|
| 7 | [pron] be difficult [verb] with the | 9 |
|
| 8 | [pron] are difficult [verb] [prep] the | 7 |
|
| 9 | [pron] be difficult [verb] in the | 6 |
|
| 10 | [pron] be difficult [verb] on the | 6 |
|
