| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] have [been] [noun] | 156 |
|
| 2 | once have [been] [noun] | 10 |
|
| 3 | once [verb] [been] [noun] | 10 |
|
| 4 | once [vb infin] [been] [noun] | 9 |
|
| 5 | once have [be] [noun] | 9 |
|
