| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to be [v-ing] [art] | 745 |
|
| 2 | [verb] to be at [art] | 167 |
|
| 3 | [verb] to be [v-ing] at | 131 |
|
| 4 | to be [v-ing] at [art] | 66 |
|
| 5 | [verb] to [v-ing] at [art] | 18 |
|
