| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [vb pp] [prep] [adj] | 8963 |
|
| 2 | may have been [vb pp] [prep] | 550 |
|
| 3 | may have [vb pp] [prep] [adj] | 129 |
|
| 4 | may have been [prep] [adj] | 33 |
|
| 5 | may have been [vb pp] [adj] | 16 |
|
