| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] have be [prep] [adj] | 6 |
|
| 2 | may [adv] have be [prep] [adj] | 6 |
|
| 3 | may [adv] [verb] been [prep] [adj] | 6 |
|
| 4 | may [adv] [vb infin] be [prep] [adj] | 6 |
|
