| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at once that they [be] | 6 |
|
| 2 | at once that they [be] | 6 |
|
| 3 | [prep] once that they [be] | 6 |
|
| 4 | [prep] once that they [be] | 6 |
|
