| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [modal v] [vb infin] account for [art] | 8 |
|
| 2 | [noun] [modal v] [vb infin] account for [art] | 5 |
|
| 3 | [modal v] [vb infin] account for [art] [noun] | 14 |
|
| 4 | [modal v] [vb infin] account for [art] [noun sg] | 12 |
|
