| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do they [vb infin] that | 12 |
|
| 2 | why do they [verb] that | 12 |
|
| 3 | why do they do that | 8 |
|
| 4 | why do they do that | 8 |
|
| 5 | why do they [verb] that | 7 |
|
| 6 | why did they [verb] that | 5 |
|
