| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [not/n't] have been [art] [adj] | 21 |
|
| 2 | may [not/n't] have been [art] [adj] | 21 |
|
| 3 | may not have been [art] [adj] | 21 |
|
| 4 | may [not/n't] have been the [adj] | 16 |
|
| 5 | may [not/n't] have been [art] [adj] | 14 |
|
| 6 | may [not/n't] have been a [adj] | 5 |
|
| 7 | may [not/n't] have been [art] [adj -est] | 5 |
|
