| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [vb infin] a significant [noun sg] | 19 |
|
| 2 | may have a significant [noun sg] | 11 |
|
| 3 | may have a significant [noun sg] | 11 |
|
| 4 | may [verb] a significant effect | 6 |
|
