| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [art] once [prep] a lifetime | 5 |
|
| 2 | be [art] once [prep] a [noun] | 5 |
|
| 3 | be [art] once [prep] a lifetime | 5 |
|
| 4 | be [art] once [prep] a [noun sg] | 5 |
|
