| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] have [been] part | 26 |
|
| 2 | [vb mod] [vb infin] [been] part | 26 |
|
| 3 | [vb mod] [vb infin] been part | 26 |
|
| 4 | may [vb infin] [been] part | 9 |
|
