| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] it is difficult [prep] | 16 |
|
| 2 | [noun] it is difficult [prep] | 16 |
|
| 3 | [noun sg] it is difficult [prep] | 14 |
|
| 4 | [noun] it is difficult for | 8 |
|
| 5 | [noun] it is difficult for | 8 |
|
| 6 | [noun] it is difficult to | 5 |
|
| 7 | [noun] it is difficult to | 5 |
|
