| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do they [vb infin] [det] | 20 |
|
| 2 | why do they [vb infin] that | 12 |
|
| 3 | why do they do [det] | 10 |
|
| 4 | why did they [vb infin] [det] | 7 |
|
| 5 | why do they [vb infin] this | 6 |
|
