| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they have been | 772 |
|
| 2 | once they have been | 63 |
|
| 3 | once they [verb] been | 63 |
|
| 4 | once they [vb base] been | 52 |
|
| 5 | once [pers pn] have been | 46 |
|
| 6 | once [pron] have been | 46 |
|
| 7 | once they have [be] | 40 |
|
| 8 | once they have been | 40 |
|
| 9 | once they have be | 40 |
|
| 10 | once they have [been] | 40 |
|
