| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] have | 2655 |
|
| 2 | [not/n't] [adv] have | 1358 |
|
| 3 | may [not/n't] have | 834 |
|
| 4 | may [not/n't] [adv] | 585 |
|
