| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] difficult [verb] a | 157 |
|
| 2 | [adv] difficult [to-vb] a | 153 |
|
| 3 | [adv] [adj] to find a | 111 |
|
| 4 | [adv] [adj] to find a | 106 |
|
| 5 | [adv] difficult to find [art] | 32 |
|
| 6 | [adv] difficult to find [art] | 32 |
|
| 7 | [adv] difficult to find a | 18 |
|
| 8 | [adv] difficult find a | 14 |
|
| 9 | [adv] difficult to find a | 13 |
|
