| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] once [that] | 128 |
|
| 2 | [prep] once [pos pn] | 42 |
|
| 3 | [prep] [that] [pos pn] | 38 |
|
| 4 | once [that] [pos pn] | 13 |
|
