| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why it [verb] | 372 |
|
| 2 | why it [vb past] | 157 |
|
| 3 | [adv] it took | 140 |
|
| 4 | why [pron] took | 51 |
|
| 5 | [Wh adv] it took | 20 |
|
| 6 | why it take | 13 |
|
| 7 | why it took | 9 |
|
