| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] be [v-ing] [prep] | 2310 |
|
| 2 | be [v-ing] i [prep] | 300 |
|
| 3 | [vb past] be [v-ing] i | 38 |
|
| 4 | [vb past] [v-ing] i [prep] | 22 |
|
