| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] is it that [prep] | 11 |
|
| 2 | [Wh adv] is it that [prep] | 10 |
|
| 3 | why is it that [prep] | 6 |
|
| 4 | why is it that [prep] | 6 |
|
| 5 | is it [adj] that [prep] | 13 |
|
| 6 | is it [adj] that [prep] | 13 |
|
| 7 | is it possible that [prep] | 5 |
|
| 8 | is it possible that [prep] | 5 |
|
