| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why it [vb -s] | 212 |
|
| 2 | why it has | 60 |
|
| 3 | why it 's | 26 |
|
| 4 | why it does | 16 |
|
| 5 | why it works | 7 |
|
| 6 | why it happens | 6 |
|
| 7 | why it makes | 6 |
|
| 8 | why it matters | 5 |
|
| 9 | why it seems | 5 |
|
