| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] | 71147 |
|
| 2 | [v-ing] [prep] [det] | 14684 |
|
| 3 | [be] [prep] [det] | 12737 |
|
| 4 | [be] [v-ing] [det] | 7728 |
|
