| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] it is [prep] | 340 |
|
| 2 | it is [to-vb] [prep] | 181 |
|
| 3 | [Wh det] it is [to-vb] | 65 |
|
| 4 | [Wh det] is [to-vb] [prep] | 62 |
|
