| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] why it is that | 27 |
|
| 2 | [to-vb] why it is that | 12 |
|
| 3 | explain why it is that | 10 |
|
| 4 | to explain [adv] it is that | 9 |
|
| 5 | to explain [Wh adv] it is that | 9 |
|
| 6 | to explain why it be that | 8 |
|
| 7 | to explain why it [be] that | 8 |
|
| 8 | to explain why it is [that] | 5 |
|
| 9 | to explain why it is [conj] | 5 |
|
| 10 | to explain why it [is] that | 5 |
|
| 11 | to explain why [pron] is that | 5 |
|
| 12 | to explain why it is that | 5 |
|
| 13 | to explain why it is that | 5 |
|
