| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be a reason why the | 5 |
|
| 2 | [be] a reason why the | 5 |
|
| 3 | a [adj] reason why the | 17 |
|
| 4 | a [adj] reason why the | 13 |
|
| 5 | a reason why the [noun] | 9 |
|
| 6 | a reason why the [noun sg] | 8 |
|
