| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] | 23929 |
|
| 2 | it be [indef pn] | 2878 |
|
| 3 | be [prep] [indef pn] | 805 |
|
| 4 | it [prep] [indef pn] | 470 |
|
