| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is why [pron] [verb] | 595 |
|
| 2 | that is why [pron] | 472 |
|
| 3 | that is [pron] [verb] | 189 |
|
| 4 | that why [pron] [verb] | 86 |
|
