| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do n't they [vb infin] | 75 |
|
| 2 | why did n't they [vb infin] | 43 |
|
| 3 | why do n't they do | 9 |
|
| 4 | why do n't they get | 8 |
|
| 5 | why do n't they have | 8 |
|
| 6 | why do n't they go | 6 |
|
| 7 | why do n't they make | 6 |
|
| 8 | why do n't they put | 5 |
|
| 9 | why do n't they come | 5 |
|
