| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] why they do not | 38 |
|
| 2 | [verb] why they [verb] n't | 35 |
|
| 3 | [verb] why they [vb base] not | 29 |
|
| 4 | [vb infin] why they [verb] not | 24 |
|
| 5 | [verb] why they do not | 23 |
|
| 6 | [verb] why they [vb past] not | 21 |
|
| 7 | [verb] why they [verb] not | 15 |
|
| 8 | [verb] why they did not | 15 |
|
| 9 | wonder why they [verb] not | 14 |
|
| 10 | know why they [verb] not | 13 |
|
| 11 | [verb] why they have not | 12 |
|
| 12 | know why they [verb] not | 12 |
|
| 13 | [vb past] why they [verb] not | 8 |
|
| 14 | [to-vb] why they [verb] not | 8 |
|
| 15 | [verb] why they have not | 6 |
|
| 16 | [verb] why they had not | 6 |
|
| 17 | wondered why they [verb] not | 5 |
|
| 18 | [v-ing] why they [verb] not | 5 |
|
| 19 | explain why they [verb] not | 5 |
|
| 20 | understand why they [verb] not | 5 |
|
