| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [vb infin] been [verb] for | 30 |
|
| 2 | may have be [verb] for | 30 |
|
| 3 | may [vb infin] be [vb pp] for | 28 |
|
| 4 | may [vb infin] be use for | 5 |
|
| 5 | may [vb infin] be used for | 5 |
|
