| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [v-ing] [adv] [prep] [art] | 4636 |
|
| 2 | be [verb] in [prep] [art] | 796 |
|
| 3 | [be] [v-ing] in [prep] [art] | 173 |
|
