| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is why they [verb] | 44 |
|
| 2 | is why they [vb base] | 35 |
|
| 3 | is why they have | 12 |
|
| 4 | is why they have | 10 |
|
| 5 | is why they [vb past] | 9 |
|
