| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] account for [art] | 149 |
|
| 2 | [modal v] [not/n't] account for | 68 |
|
| 3 | [modal v] [not/n't] for [art] | 60 |
|
| 4 | [not/n't] account for [art] | 40 |
|
