| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] is [vb pp] at | 11 |
|
| 2 | [vb base] is [vb pp] at | 10 |
|
| 3 | [v-ing] is [vb pp] at | 8 |
|
| 4 | insure is [vb pp] at | 5 |
|
| 5 | [verb] is represented at | 5 |
|
| 6 | insure is [vb pp] at | 5 |
|
