| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult to see [adv] | 212 |
|
| 2 | difficult see [Wh adv] | 200 |
|
| 3 | difficult see how | 152 |
|
| 4 | difficult see how | 152 |
|
| 5 | difficult see why | 42 |
|
| 6 | difficult see why | 42 |
|
| 7 | difficult see [adv] | 11 |
|
| 8 | difficult see where | 5 |
|
| 9 | difficult see where | 5 |
|
