| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [pron] be [v-ing] [prep] | 283 |
|
| 2 | [verb] [pron] be [v-ing] at | 187 |
|
| 3 | [vb -s] [pron] be [verb] at | 19 |
|
| 4 | [vb -s] [pron] [be] [v-ing] at | 14 |
|
