| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [not/n't] [verb] | 2837 |
|
| 2 | may [not/n't] [vb infin] | 2830 |
|
| 3 | [modal v] [not/n't] need | 469 |
|
| 4 | may [adv] need | 145 |
|
| 5 | may [not/n't] need | 31 |
|
