| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | because it is [adv] [adj] | 244 |
|
| 2 | [conj] it is [adv] difficult | 203 |
|
| 3 | [subord] it is [adv] difficult | 55 |
|
| 4 | because it be [adv] difficult | 25 |
|
| 5 | because it [be] [adv] difficult | 25 |
|
| 6 | because it [is] [adv] difficult | 23 |
|
| 7 | because it is [adv] difficult | 16 |
|
| 8 | because it is [adv] difficult | 16 |
|
| 9 | because [pers pn] is [adv] difficult | 16 |
|
| 10 | because it is [adv] difficult | 16 |
|
| 11 | because [pron] is [adv] difficult | 16 |
|
