| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | once [coord] [prep] [det] | 279 |
|
| 2 | once and [prep] [det] | 278 |
|
| 3 | once and [prep] [det] | 278 |
|
| 4 | once [conj] [prep] all | 276 |
|
| 5 | once [conj] for [det] | 274 |
|
