| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [prep] a | 15868 |
|
| 2 | [be] [prep] a | 15868 |
|
| 3 | [be] at [art] | 5731 |
|
| 4 | [be] at [art] | 5731 |
|
| 5 | [be] at a | 1286 |
|
| 6 | [be] at a | 1033 |
|
