| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [adv] difficult find | 12 |
|
| 2 | [modal v] [be] [adv] difficult find | 12 |
|
| 3 | not [be] [adv] difficult find | 7 |
|
| 4 | [adv] [be] [adv] difficult find | 7 |
|
| 5 | [not/n't] [be] [adv] difficult find | 7 |
|
| 6 | n't [be] [adv] difficult find | 5 |
|
| 7 | [be] [adv] difficult find [art] | 6 |
|
| 8 | [be] [adv] difficult find [art] | 6 |
|
