| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] [prep] [be] | 861 |
|
| 2 | [prep] a [noun] [modal v] [be] | 851 |
|
| 3 | [prep] [noun] [modal v] [prep] [be] | 66 |
|
| 4 | a [noun] [modal v] [prep] [be] | 32 |
|
| 5 | [prep] a [noun] [modal v] [prep] | 30 |
|
