| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [been] [art] [noun] | 1517 |
|
| 2 | [vb mod] once have [been] [art] | 17 |
|
| 3 | once have [been] [art] [noun] | 14 |
|
| 4 | [vb mod] once have [been] [noun] | 8 |
|
