| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] why it [vb past] | 65 |
|
| 2 | be why it [vb past] | 31 |
|
| 3 | [be] why it [vb past] | 31 |
|
| 4 | [is] why it [vb past] | 25 |
|
| 5 | [vb infin] why it [vb past] | 21 |
|
| 6 | know why it [vb past] | 14 |
|
| 7 | 's why it [vb past] | 14 |
|
| 8 | [to-vb] why it [vb past] | 14 |
|
| 9 | explain why it [vb past] | 12 |
|
| 10 | [noun] why it [vb past] | 12 |
|
| 11 | [vb past] why it [vb past] | 11 |
|
| 12 | is why it [vb past] | 11 |
|
| 13 | [prep] why it [vb past] | 10 |
|
| 14 | [prep] why it [vb past] | 10 |
|
| 15 | [conj] why it [vb past] | 10 |
|
| 16 | [adv] why it [vb past] | 10 |
|
| 17 | [coord] why it [vb past] | 10 |
|
| 18 | [noun sg] why it [vb past] | 9 |
|
| 19 | reason why it [vb past] | 9 |
|
| 20 | wonder why it [vb past] | 9 |
|
| 21 | know why it [vb past] | 8 |
|
| 22 | ask why it [vb past] | 8 |
|
| 23 | and why it [vb past] | 8 |
|
| 24 | and why it [vb past] | 8 |
|
| 25 | [v-ing] why it [vb past] | 7 |
|
| 26 | [adv] why it [vb past] | 6 |
|
| 27 | reason why it [vb past] | 6 |
|
| 28 | about why it [vb past] | 6 |
|
| 29 | about why it [vb past] | 6 |
|
| 30 | [was/were] why it [vb past] | 5 |
|
