| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] a | 15851 |
|
| 2 | [be] on a | 1849 |
|
| 3 | [modal v] [be] on | 1824 |
|
| 4 | [modal v] on a | 19 |
|
