| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [prep] | 70805 |
|
| 2 | is [vb pp] in | 12193 |
|
| 3 | [vb pp] [prep] in | 2427 |
|
| 4 | is [prep] in | 41 |
|
