| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [prep] a | 1868 |
|
| 2 | [vb -s] it [prep] a | 285 |
|
| 3 | [vb -s] it be a | 243 |
|
| 4 | [vb -s] be [prep] a | 211 |
|
| 5 | [vb -s] it be [prep] | 107 |
|
