| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] | 71147 |
|
| 2 | [be] [v-ing] i | 2193 |
|
| 3 | [v-ing] i [prep] | 1013 |
|
| 4 | [be] i [prep] | 100 |
|
