| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [v-ing] [prep] this | 914 |
|
| 2 | [be] [v-ing] [prep] this | 913 |
|
| 3 | [be] [v-ing] at [adj] | 842 |
|
| 4 | [be] [verb] at this | 398 |
|
| 5 | [be] [v-ing] at [det] | 392 |
|
| 6 | [be] [v-ing] at this | 94 |
|
| 7 | [be] [v-ing] at this | 94 |
|
