| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | of the difficulties [is] [that] | 6 |
|
| 2 | of the difficulties [is] [that] | 6 |
|
| 3 | [prep] the difficulties [is] [that] | 6 |
|
| 4 | [prep] the difficulties [is] [that] | 6 |
|
