| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [verb] for [art] | 198 |
|
| 2 | [modal v] account for [art] | 149 |
|
| 3 | may account [prep] [art] | 44 |
|
| 4 | may account for [art] | 44 |
|
