| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] have be | 4575 |
|
| 2 | [vb mod] [adv] have be | 2469 |
|
| 3 | [vb mod] once have be | 67 |
|
| 4 | [vb mod] once [verb] be | 67 |
|
| 5 | [vb mod] once have [be] | 67 |
|
| 6 | [vb mod] once have be | 67 |
|
| 7 | [vb mod] once [vb infin] be | 67 |
|
| 8 | [modal v] once have be | 67 |
|
