| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] a [noun sg] [art] | 101 |
|
| 2 | be at [art] [noun sg] [art] | 46 |
|
| 3 | be at a [noun] [art] | 7 |
|
| 4 | [be] at a [noun sg] [art] | 7 |
|
