| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [v-ing] [prep] [prep] | 54 |
|
| 2 | [modal v] be [v-ing] [prep] some | 35 |
|
| 3 | [modal v] be [v-ing] some [prep] | 28 |
|
| 4 | be [v-ing] [prep] some [prep] | 10 |
|
