| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [indef pn] [prep] [pron] | 417 |
|
| 2 | [indef pn] [prep] [pron] [to-vb] | 173 |
|
| 3 | is [prep] [pron] [to-vb] | 161 |
|
| 4 | is [indef pn] [pron] [to-vb] | 5 |
|
