| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have be | 2870 |
|
| 2 | may have been | 2861 |
|
| 3 | may have [been] | 2861 |
|
| 4 | may have [is] | 5 |
|
| 5 | may have is | 5 |
|
