| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] know how old | 11 |
|
| 2 | do [adv] know how old | 11 |
|
| 3 | do [adv] know how old | 6 |
|
| 4 | [vb base] [adv] know how old | 6 |
|
| 5 | [adv] know how old [pers pn] | 6 |
|
| 6 | [adv] know how old [pron] | 6 |
|
