| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] how old | 8 |
|
| 2 | [adv] [verb] how old | 30 |
|
| 3 | [adv] [vb infin] how old | 23 |
|
| 4 | [adv] know how old | 15 |
|
| 5 | [adv] know how old | 12 |
|
| 6 | [adv] how old [be] | 17 |
|
| 7 | [adv] how old be | 17 |
|
| 8 | [adv] how old [is] | 7 |
|
| 9 | [adv] how old [am/are] | 6 |
|
| 10 | [adv] how old are | 6 |
|
| 11 | [adv] how old is | 5 |
|
