| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] not | 2812 |
|
| 2 | why [verb] n't | 2764 |
|
| 3 | why do not | 2590 |
|
| 4 | why [vb base] not | 1728 |
|
| 5 | why do not | 1644 |
|
| 6 | why [vb past] not | 859 |
|
| 7 | why did not | 751 |
|
| 8 | why have not | 222 |
|
| 9 | why [vb -s] not | 220 |
|
| 10 | why does not | 190 |
|
| 11 | why had not | 108 |
|
| 12 | why have not | 84 |
|
| 13 | why [verb] not | 48 |
|
| 14 | why has not | 30 |
|
| 15 | why [vb infin] not | 5 |
|
| 16 | why do not | 5 |
|
