| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] why they do [not/n't] | 14 |
|
| 2 | [is] why they do not | 14 |
|
| 3 | [is] why they do n't | 12 |
|
| 4 | [is] why they do [adv] | 11 |
|
| 5 | 's why they do [adv] | 11 |
|
