| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [adv] difficult to find | 10 |
|
| 2 | [be] [adv] [adv] difficult to find | 10 |
|
| 3 | [is] [adv] [adv] difficult to find | 5 |
|
| 4 | is [adv] [adv] difficult to find | 5 |
|
| 5 | [adv] [be] [adv] difficult to find | 8 |
|
| 6 | [adv] be [adv] difficult to find | 8 |
|
| 7 | [adv] [be] [adv] difficult to find | 7 |
|
| 8 | [adv] be [adv] difficult to find | 7 |
|
