| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [verb] | 170349 |
|
| 2 | [modal v] [verb] a | 43903 |
|
| 3 | [be] [verb] a | 29815 |
|
| 4 | [modal v] [be] a | 18652 |
|
