| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | where [verb] they come from | 17 |
|
| 2 | where do they come from | 17 |
|
| 3 | where [vb past] they come from | 10 |
|
| 4 | where did they come from | 10 |
|
| 5 | where do they come from | 7 |
|
| 6 | where [vb base] they come from | 7 |
|
