| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] may have been [adj] to | 10 |
|
| 2 | this may have [been] [adj] to | 10 |
|
| 3 | [det] may have [been] [adj] to | 10 |
|
| 4 | [det] may have [been] due to | 9 |
|
