| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] | 477791 |
|
| 2 | [v-ing] [vb pp] [prep] | 2607 |
|
| 3 | [v-ing] be [vb pp] | 2109 |
|
| 4 | [v-ing] be [prep] | 399 |
|
