| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but once [art] [noun] | 77 |
|
| 2 | but once [art] [noun sg] | 63 |
|
| 3 | but once the [noun] | 61 |
|
| 4 | but once the [noun] | 61 |
|
| 5 | but once a [noun] | 16 |
|
| 6 | but once a [noun] | 15 |
|
| 7 | but once [art] [noun pl] | 12 |
|
| 8 | but once [art] year | 7 |
|
| 9 | but once [art] year | 7 |
|
