| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] have [noun] | 76 |
|
| 2 | may [adv] [vb infin] difficulty | 17 |
|
| 3 | [modal v] [adv] have difficulty | 17 |
|
| 4 | may [adv] [verb] difficulty | 17 |
|
| 5 | [vb mod] [adv] have difficulty | 17 |
|
| 6 | may [adv] have difficulty | 10 |
|
| 7 | may [adv] have difficulty | 9 |
|
| 8 | may [adv] have difficulty | 9 |
|
