| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [prep] be [v-ing] be | 8 |
|
| 2 | [vb base] to be [v-ing] be | 8 |
|
| 3 | [vb base] [prep] be [v-ing] is | 6 |
|
