| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [pron] [be] [adj] [verb] | 3754 |
|
| 2 | [coord] [pron] [be] [adj] [verb] | 3231 |
|
| 3 | [conj] [pron] [be] difficult [verb] | 577 |
|
| 4 | [coord] [pron] [be] difficult [verb] | 263 |
|
