| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [adj] [verb] that [adj] | 392 |
|
| 2 | [is] [adj] [verb] that [adj] | 379 |
|
| 3 | [is] difficult [verb] [conj] [adj] | 41 |
|
| 4 | [be] difficult [verb] that [adj] | 32 |
|
| 5 | [is] difficult [verb] that [adj] | 18 |
|
