| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [that] it [is] [adv] difficult | 79 |
|
| 2 | that it [is] [adv] difficult | 79 |
|
| 3 | [that] it is [adv] difficult | 66 |
|
| 4 | [that] it [is] very difficult | 28 |
|
| 5 | [that] it 's [adv] difficult | 13 |
|
| 6 | [that] it [is] often difficult | 10 |
|
| 7 | [that] it [is] more difficult | 8 |
|
| 8 | [that] it [is] extremely difficult | 7 |
|
