| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] have been [art] | 138 |
|
| 2 | [adv] have been [prep] [art] | 96 |
|
| 3 | may have been [prep] [art] | 59 |
|
| 4 | may [adv] have been [prep] | 48 |
|
