| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] the | 1550 |
|
| 2 | once [prep] a [noun sg] | 396 |
|
| 3 | once a [noun sg] the | 12 |
|
| 4 | once [prep] [noun sg] the | 7 |
|
