| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [prep] | 70805 |
|
| 2 | [det] [vb pp] [prep] | 7047 |
|
| 3 | [det] is [vb pp] | 5469 |
|
| 4 | [det] is [prep] | 2328 |
|
