| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] account for some of | 6 |
|
| 2 | [vb mod] account for some of | 6 |
|
| 3 | may account for some of | 5 |
|
| 4 | may account for some of | 5 |
|
| 5 | account for some of the | 7 |
|
| 6 | account for some of [art] | 7 |
|
| 7 | account for some of the | 7 |
|
| 8 | account for some of [art] | 7 |
|
