| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [adv] [prep] a | 4215 |
|
| 2 | [be] [adv] [prep] a | 2425 |
|
| 3 | [be] once [prep] [art] | 36 |
|
| 4 | [be] once [prep] a | 13 |
|
| 5 | [be] once [prep] a | 13 |
|
