| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [prep] be [v-ing] | 1697 |
|
| 2 | [vb past] [prep] be of | 82 |
|
| 3 | [vb past] be [v-ing] of | 38 |
|
| 4 | [prep] be [v-ing] of | 33 |
|
| 5 | [vb past] [prep] [v-ing] of | 13 |
|
