| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what difference [verb] it [vb infin] | 25 |
|
| 2 | [pron] difference [verb] it [vb infin] | 25 |
|
| 3 | what difference [verb] it [vb infin] | 25 |
|
| 4 | [Wh det] difference [verb] it [vb infin] | 25 |
|
