| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it [is] [adv] difficult | 70 |
|
| 2 | [subord] [pers pn] is [adv] difficult | 55 |
|
| 3 | because [pers pn] [is] [adv] difficult | 23 |
|
| 4 | [subord] [pers pn] [is] very difficult | 21 |
|
| 5 | [subord] [pers pn] 's [adv] difficult | 15 |
|
| 6 | [subord] [pers pn] [is] more difficult | 12 |
|
| 7 | as [pers pn] [is] [adv] difficult | 11 |
|
| 8 | [subord] [pers pn] [is] so difficult | 8 |
|
| 9 | although [pers pn] [is] [adv] difficult | 8 |
|
| 10 | [subord] [pers pn] [is] often difficult | 6 |
|
| 11 | since [pers pn] [is] [adv] difficult | 6 |
|
| 12 | if [pers pn] [is] [adv] difficult | 5 |
|
| 13 | where [pers pn] [is] [adv] difficult | 5 |
|
