| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [verb] [been] | 2865 |
|
| 2 | may [vb infin] [been] | 2865 |
|
| 3 | may [verb] been | 2865 |
|
| 4 | may have [been] | 2865 |
|
| 5 | may have [been] | 2861 |
|
