| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and why it [verb] | 30 |
|
| 2 | and why it [vb -s] | 22 |
|
| 3 | and why it [vb past] | 8 |
|
| 4 | and why it have | 6 |
|
| 5 | and why it has | 5 |
|
