| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [prep] [det] | 29167 |
|
| 2 | be [v-ing] [prep] [adj] | 8288 |
|
| 3 | be [v-ing] [prep] [det] | 3559 |
|
| 4 | [be] [v-ing] [prep] [det] | 3554 |
|
