| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | difficult [conj] it is [adv] | 7 |
|
| 2 | difficult [conj] it is [verb] | 5 |
|
| 3 | difficult [conj] it is [to-vb] | 5 |
|
| 4 | difficult [conj] it is [adv] | 5 |
|
| 5 | [adv] difficult [conj] it is | 12 |
|
| 6 | [adv] difficult [conj] it is | 11 |
|
| 7 | more difficult [conj] it is | 6 |
|
| 8 | more difficult [conj] it is | 6 |
|
| 9 | difficult [verb] [conj] it is | 16 |
|
| 10 | difficult [to-vb] [conj] it is | 16 |
|
