| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [that] it is [adv] [adj] [verb] | 257 |
|
| 2 | [conj] it is [adv] difficult [verb] | 150 |
|
| 3 | [that] it [be] [adv] difficult [verb] | 67 |
|
| 4 | [that] it be [adv] difficult [verb] | 67 |
|
| 5 | [that] it [is] [adv] difficult [verb] | 57 |
|
| 6 | [that] it is [adv] difficult [verb] | 53 |
|
| 7 | [that] [pron] is [adv] difficult [verb] | 49 |
|
