| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why it [verb] | 372 |
|
| 2 | why it [vb -s] | 212 |
|
| 3 | why it [vb past] | 157 |
|
| 4 | why it have | 131 |
|
| 5 | why it has | 60 |
|
| 6 | why it had | 45 |
|
| 7 | why it do | 33 |
|
| 8 | why it happen | 31 |
|
| 9 | why it 's | 26 |
|
| 10 | why it happened | 25 |
|
| 11 | why it does | 16 |
|
| 12 | why it did | 14 |
|
| 13 | why it take | 13 |
|
| 14 | why it work | 10 |
|
| 15 | why it make | 9 |
|
| 16 | why it took | 9 |
|
| 17 | why it matter | 8 |
|
| 18 | why it go | 7 |
|
| 19 | why it works | 7 |
|
| 20 | why it seem | 7 |
|
| 21 | why it makes | 6 |
|
| 22 | why it happens | 6 |
|
| 23 | why it occur | 6 |
|
| 24 | why it look | 5 |
|
| 25 | why it exist | 5 |
|
| 26 | why it seems | 5 |
|
| 27 | why it fail | 5 |
|
| 28 | why it come | 5 |
|
| 29 | why it need | 5 |
|
| 30 | why it went | 5 |
|
