| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] can be difficult [prep] | 7 |
|
| 2 | it can be difficult [prep] | 7 |
|
| 3 | it can be difficult [prep] | 7 |
|
| 4 | [pers pn] can be difficult [prep] | 7 |
|
| 5 | [noun] can be difficult [prep] | 7 |
|
| 6 | [noun sg] can be difficult [prep] | 5 |
|
| 7 | can be [adv] difficult [prep] | 15 |
|
| 8 | can be [adv] difficult [prep] | 15 |
|
| 9 | can be very difficult [prep] | 7 |
|
| 10 | can be very difficult [prep] | 7 |
|
| 11 | can be difficult [to-vb] [prep] | 14 |
|
| 12 | can be difficult [verb] [prep] | 14 |
|
| 13 | can be difficult [prep] [noun] | 9 |
|
| 14 | can be difficult [prep] [noun pl] | 6 |
|
