| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [Wh adv] [det] [noun sg] [noun] | 10 |
|
| 2 | is [Wh adv] [det] [noun] [noun sg] | 6 |
|
| 3 | is why [det] [noun] [noun] | 5 |
|
