| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] that it [is] difficult | 5 |
|
| 2 | [det] [that] it is difficult | 5 |
|
| 3 | [det] [that] it [is] difficult | 5 |
|
| 4 | such [that] it [is] difficult | 5 |
|
