| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [pron] how | 581 |
|
| 2 | [vb infin] [pron] old | 74 |
|
| 3 | [vb infin] how old | 30 |
|
| 4 | [pron] how old | 24 |
|
