| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] how long | 114 |
|
| 2 | [vb infin] how long | 52 |
|
| 3 | know how long | 51 |
|
| 4 | [prep] how long | 36 |
|
| 5 | [prep] how long | 36 |
|
| 6 | know how long | 35 |
|
| 7 | [adv] how long | 30 |
|
| 8 | [vb base] how long | 25 |
|
| 9 | [adv] how long | 25 |
|
| 10 | [conj] how long | 16 |
|
| 11 | [v-ing] how long | 16 |
|
| 12 | [coord] how long | 15 |
|
| 13 | [noun] how long | 15 |
|
| 14 | and how long | 13 |
|
| 15 | [noun sg] how long | 13 |
|
| 16 | and how long | 13 |
|
| 17 | wonder how long | 11 |
|
| 18 | for how long | 10 |
|
| 19 | [to-vb] how long | 10 |
|
| 20 | for how long | 10 |
|
| 21 | on how long | 9 |
|
| 22 | [adj] how long | 9 |
|
| 23 | on how long | 9 |
|
| 24 | [pron] how long | 8 |
|
| 25 | [pers pn] how long | 8 |
|
| 26 | so how long | 7 |
|
| 27 | be how long | 7 |
|
| 28 | to how long | 7 |
|
| 29 | so how long | 7 |
|
| 30 | [be] how long | 7 |
|
