| No | Pattern | Freq | Relations |
|---|---|---|---|
| 31 | [adv] difficult it is [prep] | 24 |
|
| 32 | [adv] difficult it is for | 20 |
|
| 33 | [adv] difficult it is for | 20 |
|
| 34 | [adv] difficult it is to get | 10 |
|
| 35 | [adv] difficult it is get | 10 |
|
| 36 | [adv] difficult it is [v-ing] | 6 |
|
| 37 | [adv] difficult it is [adv] | 5 |
|
| 38 | [adv] difficult it is [adv] | 5 |
|
