| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh adv] it is [that] | 8 |
|
| 2 | [prep] [adv] it is [that] | 8 |
|
| 3 | [prep] why it [be] [that] | 7 |
|
| 4 | [prep] why it be [that] | 7 |
|
| 5 | [prep] why it is [conj] | 5 |
|
| 6 | [prep] why it is [that] | 5 |
|
| 7 | [prep] why it [is] [that] | 5 |
|
| 8 | [prep] why it is [that] | 5 |
|
| 9 | [prep] why [pron] is [that] | 5 |
|
| 10 | [prep] why [pers pn] is [that] | 5 |
|
