| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [conj] | 4439 |
|
| 2 | it [be] [subord] | 2346 |
|
| 3 | [pron] [be] whether | 63 |
|
| 4 | it [be] whether | 36 |
|
