| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it [is] difficult [prep] | 20 |
|
| 2 | and it [is] difficult [prep] | 20 |
|
| 3 | and it [is] difficult [prep] | 20 |
|
| 4 | and it is difficult [prep] | 17 |
|
| 5 | and it [is] difficult for | 11 |
|
| 6 | and it [is] difficult for | 11 |
|
| 7 | and it [is] difficult to | 6 |
|
| 8 | and it [is] difficult to | 6 |
|
