| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] | 71147 |
|
| 2 | [be] time [prep] | 577 |
|
| 3 | [v-ing] time [prep] | 237 |
|
| 4 | [be] [v-ing] time | 95 |
|
