| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [det] [noun] | 6833 |
|
| 2 | be [prep] a [noun] | 1400 |
|
| 3 | be [prep] [det] [noun] | 1003 |
|
| 4 | be a [det] [noun] | 96 |
|
| 5 | be [prep] a [det] | 18 |
|
