| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] [pron] | 14365 |
|
| 2 | it [be] [Wh det] | 843 |
|
| 3 | [pron] [be] which | 109 |
|
| 4 | it [be] which | 23 |
|
