| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [vb pp] [to-vb] | 1010 |
|
| 2 | [adj] is [vb pp] [to-vb] | 457 |
|
| 3 | [adj] it is [to-vb] | 292 |
|
| 4 | [adj] it is [vb pp] | 138 |
|
