| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] [pron] [vb infin] | 1160 |
|
| 2 | [adv] [vb past] they [vb infin] | 430 |
|
| 3 | [Wh adv] [vb past] they [vb infin] | 339 |
|
| 4 | why [verb] they [vb infin] | 264 |
|
| 5 | why [vb past] they [verb] | 119 |
|
| 6 | why [vb past] they [vb infin] | 109 |
|
