| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [verb] for [art] | 198 |
|
| 2 | may [vb infin] for [art] | 198 |
|
| 3 | [modal v] account for [art] | 145 |
|
| 4 | may account for [art] | 44 |
|
| 5 | may account for [art] | 44 |
|
| 6 | may account [prep] [art] | 44 |
|
