| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what do [pron] [vb infin] [art] | 207 |
|
| 2 | what do [pron] [vb infin] for | 193 |
|
| 3 | do [pron] [vb infin] for [art] | 98 |
|
