| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | this [modal v] account for [art] | 16 |
|
| 2 | this [modal v] account for the | 16 |
|
| 3 | this [vb mod] account for [art] | 16 |
|
| 4 | this [modal v] account for [art] | 16 |
|
| 5 | this may account for [art] | 8 |
|
| 6 | this may account for [art] | 8 |
|
